| Record Number | Keyword(s) | Country | Catalog Listed? | Continent | |
| 1246 | K (with no country name) | Bosnia and Herzegovina. | Real | Europe |  |
| 1247 | K 60 K (surcharge) | Armenia (1919). | Real | Europe |  |
| 1248 | K K K (overprint) | Philippines- Aguinaldo, political secret society [Kataas-taasan Kagalanggalang Katipunan]. | Real | Asia |  |
| 1249 | K-numeral-K (surcharge) | Far Eastern Republic (1920). | Real | Asia |  |
| 1250 | K-U-K FELDPOST | Austria, military stamps (1915-8). | Real | Europe | |
| 1251 | K-U-K FELDPOST (overprint on stamps of Bosnia and Herzegovina) | Austria, military stamps (1915). | Real | Europe |  |
| 1252 | K-U-K FELDPOST (with denominations in bani or lei) | Romania- Austrian occupation (1917-8). | Real | Europe |  |
| 1253 | K-U-K-MILITARPOST | Bosnia and Herzegovina (1912-18) [Kaiserliche und Konigliche Militarpost (Imperial and Royal Military Post)]. | Real | Europe |  |
| 1254 | K. CPБCKA ПOЩTA | Serbia. | Real | Europe |  |
| 1255 | K. WURTT. POST | German States- Wurttemberg (1875-1900) [Konigliche Wurtembergische Post (Royal Wurttemberg Post)]. | Real | Europe | |
| 1256 | K.C. ПOЩTA | Serbia. | Real | Europe |  |
| 1257 | K.C.-NOUITA | Serbia (1866) [Princely Serbian Post]. | Real | Europe | |
| 1258 | K.G.C.A. (overprint on newspaper stamps of Yugoslavia) | Yugoslavia- Carinthian plebescite (1920) [Koruska Glasoona Cona A (Carinthian Plebescite Zone A)]. | Real | Europe |  |
| 1259 | K.K. (BRIEF MARKEN) | Austria [Imperial Royal Letter Stamp]. | Real | Europe | |
| 1260 | K.P. (overprint) | Philippines- Japanese occupation officials [Kagamitang Pampamahalaan]. | Real | Asia | |
| 1261 | K.S.A. | Saudi Arabia (1975-present). | Real | Asia |  |
| 1262 | K.U.K. | Austria, Bosnia and Herzegovina [Kaiserliche und Konigliche (Imperial and Royal)]. | Real | Europe | |
| 1263 | K.П. (overprint) | Greece, postal tax stamps. | Real | Europe | |
| 1264 | KA3AKCTAH | Republic of Kazakhstan | Real | Asia |  |
| 1265 | KAIS KON | Austria (1853-1907). | Real | Europe |  |
| 1266 | KAISERLICHE KONIGLICHE OESTERRPOST | Austria (1853-1907). | Real | Europe |  |
| 1267 | KAISERLICHE KONIGLICHE OESTERRPOST (denominations in piastres) | Austria- Offices in Turkey. | Real | Europe |  |
| 1268 | KALAYAAN NANG PILIPINAS | Philippines- Japanese occupation. | Real | Asia |  |
| 1269 | KALIMANTAN, REPUBLIK | Bogus overprints for supposed independence movement in Indonesia. | Not Scott Listed | Asia | |
| 1270 | KAMERUN | Cameroun (1900-18). | Real | Africa |  |
| 1271 | KAMERUN (overprint on stamps of Germany) | Cameroun (1897). | Real | Africa |  |
| 1272 | KAMTSHATKA | Bogus Russian local overprint. | Not Scott Listed | Asia | |
| 1273 | KANGAROO ISLAND | Australian locals. | Not Scott Listed | Australia | |
| 1274 | Kans. (overprint) | U.S., Kansas overprints to reduce theft (1929). | Real | Americas |  |
| 1275 | KANTUNG | No Information Available. | Not Scott Listed | Asia | |
| 1276 | KAP | Latvia (1918-22). | Real | Europe |  |
| 1277 | KAPПATCbKA-YKRAIHA | Czechoslovakia- Carpatho-Ukraine. | Real | Europe |  |
| 1278 | KARJALA | Karelia (1922). | Real | Europe |  |
| 1279 | KARJALA | Bogus Russian local overprint. | Not Scott Listed | Asia |  |
| 1280 | KARKI (overprint on stamps of Italy) | Italy- Aegean Islands- Calchi (1912-22). | Real | Europe |  |
| 1281 | KARLFONDS | Austria, Bosnia and Herzegovina, military fieldpost stamps with charity surcharge [Emperor Karl’s Fund]. | Real | Europe |  |
| 1282 | KARNTEN ABSTIMMUNG (overprint on stamps of Austria) | Austria- Carinthian plebescite (1920). | Real | Europe |  |
| 1283 | KARNTEN-CARINTHIA | Austrian plebiscite labels. | Not Scott Listed | Europe |  |
| 1284 | KAROLINEN | Caroline Islands. | Real | Australia |  |
| 1285 | KASAI (SOUTH KASAI) | Congo- unrecognized state (1960-1). | Real | Africa |  |
| 1286 | KATANGA | Congo- unrecognized state (1960-3). Revolt was against the (then) Republic of the Congo. | Real | Africa |  |
| 1287 | KATCHAK POSTA (overprint in Turkish characters) | Turkey, used on attempted but caught smuggled private letters into Greece, representing double postage and fine paid [Smuggled Letter]. | Real | Asia | |
| 1288 | KATHERI STATE OF SEIYUN | Aden- Katheri (1942). | Real | Asia |  |
| 1289 | KATIBO | Donald Evans issue, Surinam. | Not Scott Listed | None | |
| 1290 | KATIE | One of the Sicmon Islands in the South Pacific created by Nick Bantock for his book, Griffin & Sabine. | Not Scott Listed | None | |
| 1291 | KATIN | One of the Sicmon Islands in the South Pacific created by Nick Bantock for his book, Griffin & Sabine. | Not Scott Listed | none | |
| 1292 | KAULBACH ISLAND | (1971-84) Island off the coast of Nova Scotia with local post stamps to frank mail to the nearest Canadian post office on the mainland. | Real | Americas |  |
| 1293 | KAWTHULAY | Burmese related fantasy. | Not Scott Listed | Asia | |
| 1294 | KAПATCbKA ЧkPAIHA | Carpatho-Ukraine. | Real | Europe |  |
| 1295 | KEDAH | Malaya- Kedah. | Real | Asia |  |
| 1296 | KEELING | Cocos (Keeling) Islands. | Real | Australia | |
| 1297 | KELANTAN | Malaya- Kelantan. | Real | Asia |  |
| 1298 | KEMAHKOTAAN (overprint) | Malaya- Johore, for new Sultan (1896) [Coronation]. | Real | Asia |  |
| 1299 | KEMP LAND | Antarctic fantasy by Eric Gardo of Australia. web site | Not Scott Listed | Australia |  |
| 1300 | KENTTA POSTIA. PUOLUSTUSVOIMAT | Finland, military stamps. | Real | Europe |  |
| 1301 | KENTTA-POSTI FALTPOST | Finland, military stamps (1943). | Real | Europe |  |
| 1302 | KENTTAPOSTIA | Finland, military stamps (1941-63). | Real | Europe |  |
| 1303 | KENYA & UGANDA | Kenya, Uganda & Tanzania (1922-33). | Real | Africa |  |
| 1304 | KENYA UGANDA TANGANYIKA | Kenya, Uganda & Tanzania (1935-64). | Real | Africa |  |
| 1305 | KENYA UGANDA TANZANIA | Kenya, Uganda & Tanzania (1965-1976). | Real | Africa |  |
| 1306 | KERASSUNDE (overprint on stamps of Russia) | Russia- Offices in Turkey (1909-10). | Real | Asia |  |
| 1307 | KERGUELEN LAND | Antarctic, also known as Desolation Island, 1892. | Not Scott Listed | Americas | |
| 1308 | KGL. POST FRM. (denomination in cents) | Danish West Indies (1855-73) [Kongeligt Post Freimaerk (Royal Post Free Stamp)]. | Real | Americas |  |
| 1309 | KGL. POST FRM. (denomination in skillings) | Denmark (1851-68) ) [Kongeligt Post Freimaerk (Royal Post Free Stamp)]. | Real | Europe |  |
| 1310 | KHAFJI | Disputed neutral zone in Arabia between Saudi Arabia and Kuwait. | Not Scott Listed | Asia | |
| 1311 | KHALISTAN | Punjab, India labels issued by Sikhs in exile in England. | Not Scott Listed | Asia | |
| 1312 | KHMERE | Cambodia (1971-5). | Real | Asia | |
| 1313 | KHOR FAKKAN | Sharjah (1964-?). | Real | Asia |  |
| 1314 | KIAUTSCHOU | Kiauchau. | Real | Asia |  |
| 1315 | KIBO | Secessionist province of Tanzania marketed as matchbox labels. | Not Scott Listed | Africa | |
| 1316 | KIBRIS | Cyprus. | Real | Europe | |
| 1317 | KIBRIS CUMHURIYETI | Cyprus [Cyprus Republic]. | Real | Europe | |
| 1318 | KIBRIS TURK FEDERE DEVLETI | Cyprus- Turkish occupation. | Real | Europe | |
| 1319 | KINGSTON RELIEF FUND 1d (overprint) | Barbados, semipostals for help for Jamaican earthquake (1906). | Real | Americas | |
| 1320 | KIONGA (overprint on stamps of Lourenzo Marques) | Kionga (1916) | Real | Africa |  |
| 1321 | KISHANGARH | India- Kishangarh (1904-47). | Real | Asia |  |
| 1322 | KISHENGARH | India- Kishangarh (1899-1904). | Real | Asia |  |
| 1323 | KK-POST-STEMPEL with values in cents | Austria- Lombardy Venetia [Imperial Royal Postage Stamp]. | Real | Europe |  |
| 1324 | KK-POST-STEMPEL with values in kreuzer | Austria [Imperial Royal Postage Stamp]. | Real | Europe | |
| 1325 | KLAIPEDA | Memel, Lithuanian occupation (1923). | Real | Europe |  |
| 1326 | KOH | Russia, South Russia, Far Eastern Republic, Finland, Latvia or Batum. | Real | Europe | |
| 1327 | KOINΩNIKH ПRONOIA | Greece, postal tax stamps. | Real | Europe |  |
| 1328 | KOLGUEV ISLANDS | Bogus Russian local overprint. | Not Scott Listed | Asia | |
| 1329 | KOLONIE CURACAO | Netherlands Antilles (1903-8) [Colony of Curacao]. | Real | Americas |  |
| 1330 | KOLONIE SURINAME | Surinam (1903-8) [Colony of Surinam]. | Real | Asia |  |
| 1331 | KOMI | Bogus Russian local overprint. | Not Scott Listed | Asia | |
| 1332 | KOMSOMOLSK | Bogus Russian local overprint. | Not Scott Listed | Asia | |
| 1333 | KON | Russia, South Russia, Far Eastern Republic, Finland, Latvia or Batum. | Real | Asia | |
| 1334 | KONGELIGT POST FRIMAERKE | Denmark (1851) [Royal Post Free Stamp]. | Real | Europe |  |
| 1335 | KONGRESI K.K.F.S. (overprint) | Albania, postal tax semipostals. | Real | Europe |  |
| 1336 | KONINKRIJK DER NEDERLANDEN | Netherlands [Kingdom of the Netherlands]. | Real | Europe |  |
| 1337 | KOP KOH | Finland (1856-66). | Real | Europe | |
| 1338 | KOPYTΣA | Epirus- Karitsa issue. | Real | Europe |  |
| 1339 | KORCA | Albania (1914-18). | Real | Europe |  |
| 1340 | KORCE | Albania (1914-18). | Real | Europe |  |
| 1341 | KOREKIA | Bogus Russian local overprint. | Not Scott Listed | Asia | |
| 1342 | KORIAKIA | Bogus Russian local overprint. | Not Scott Listed | Asia | |
| 1343 | KORONA (currency) | Hungary [Crown]. | Real | Europe |  |
| 1344 | KOSOVES, REPUBLICA E, KOSOVO | Jugoslavia. | Not Scott Listed | Europe | |
| 1345 | KOUANCTCHE-OUWAN (overprint on stamps of Indo-China) | France- Offices in China- Kwangchowan (1906-41). | Real | Europe | |
| 1346 | KOUANG-TCHEOU (overprint on stamps of Indo-China) | France- Offices in China- Kwangchowan (1906-41). | Real | Europe |  |
| 1347 | KOZTARSASAG | Hungary (1918-9) [Republic]. | Real | Europe |  |
| 1348 | KOZTARSASAG (overprint) | Hungary (1918-9) [Republic]. | Real | Europe |  |
| 1349 | KOЛETHИ ПPATKИ | Bulgaria, parcel post. | Real | Europe |  |
| 1350 | KOП-KOP. | Finland. | Real | Europe | |
| 1351 | KPAJbEBCTBO C. X. C. | Yugoslavia. | Real | Europe |  |
| 1352 | KPALJEVSTVO SRBA, HRVATA I SLOVENACA | Yugoslavia. | Real | Europe |  |
| 1353 | KPAЛbEBИHA CPБA XPBATAИ CЛOBEHAЦA | Yugoslavia. | Real | Europe |  |
| 1354 | KPAЛbEBИHA CPБИJA | Serbia. | Real | Europe | |
| 1355 | KPbIMCKЛΓO KPAEBOΓO ПPABKTEЛbCTБA | South Russia- Crimea. | Real | Europe | |
| 1356 | KPCT.A. | Yugoslavia, postal tax stamps. | Real | Europe | |
| 1357 | KPHTH | Crete. | Real | Europe | |
| 1358 | KR. (currency) | Austria, Baden, Bavaria, Germany, Hungary or Wurttemberg [Kronen (crown)]. | Real | Europe | |
| 1359 | Kr. 1.98 (overprint) | Sweden, parcel posts. | Real | Europe | |
| 1360 | Kr. 2.12 (overprint) | Sweden, parcel posts. | Real | Europe | |
| 1361 | KRAlb. UPHATOPA | Montenegro. | Real | Europe | |
| 1362 | KRALJEVINA SRBA, HRVATA I SLOVENACA | Yugoslavia [Kingdom of Serbia, Croatia and Slovenia]. | Real | Europe |  |
| 1363 | KREUZER (currency) | Austria, Baden, Bavaria, Germany, Hungary or Wurttemberg. | Real | Europe | |
| 1364 | KRONE (currency) | Austria (1899-1952). | Real | Europe | |
| 1365 | KRONEN (currency) | Austria (1899-1952). | Real | Europe | |
| 1366 | KUNSTLAND, EAST & WEST | Donald Evans issue. | Not Scott Listed | None | |
| 1367 | KUPA (overprint) | Yugoslavia- Italian occupation (1941-2). | Real | Europe |  |
| 1368 | KURDISTAN | At least three different issues produced at varying times. | Not Scott Listed | Asia |  |
| 1369 | KURIL ISLANDS | Bogus Russian local overprint. | Not Scott Listed | Asia |  |
| 1370 | KURLAND (overprint) | Latvia- German occupation (1945). | Real | Europe |  |
| 1371 | KURUS | Turkey. | Real | Asia | |
| 1372 | KUWAIT (overprint on stamps of Great Britain) | Kuwait (1948-58). | Real | Asia |  |
| 1373 | KUWAIT (overprint on stamps of India) | Kuwait (1923-45). | Real | Asia |  |
| 1374 | KИTAИ | Russia- Offices in China. | Real | Asia |  |
| 3556 | Kalimnos | Kalimnos (stamp issuing country) 1912 - 1932 | Real | Europe |  |
| 3557 | Kamerun | Kamerun (stamp issuing country) 1897 - 1915 | Real | Africa |  |
| 3558 | Kampuchea | Kampuchea (stamp issuing country) 1980 - 1989 | Real | Asia |  |
| 3559 | Kansu | Kansu (stamp issuing country) 1949 - only | Real | Asia |  |
| 3560 | Karpathos | Karpathos (stamp issuing country) 1912 - 1932 | Real | Europe |  |
| 3561 | Kasos | Kasos (stamp issuing country) 1912 - 1932 | Real | Europe | |
| 3563 | Kastellórizo | Kastellórizo (stamp issuing country) 1920 - 1932 | Real | Europe |  |
| 3564 | Katanga | Katanga (stamp issuing country) 1960 - 1963 | Real | Africa |  |
| 3565 | Kathiri State of Seiyun | Kathiri State of Seiyun (stamp issuing country) 1942 - 1967 | Real | Asia |  |
| 3566 | Kavalla (French Post Office) | Kavalla (French Post Office) (stamp issuing country) 1893 - 1914 | Real | Europe |  |
| 3567 | Kavalla (Greek Occupation) | Kavalla (Greek Occupation) (stamp issuing country) 1913 - only | Real | Europe |  |
| 3568 | Kazakhstan | Kazakhstan (stamp issuing country) 1992 - | Real | Asia |  |
| 3569 | Kedah | Kedah (stamp issuing country) 1912 - | Real | Asia |  |
| 3570 | Kelantan | Kelantan (stamp issuing country) 1911 - | Real | Asia |  |
| 3571 | Kelantan (Japanese Occupation) | Kelantan (Japanese Occupation) (stamp issuing country) 1942 - 1945 | Real | Asia |  |
| 3572 | Kenya | Kenya (stamp issuing country) 1963 - | Real | Africa |  |
| 3574 | Kenya and Uganda | Kenya and Uganda (stamp issuing country) 1922 - 1935 | Real | Africa |  |
| 3575 | Kenya Uganda and Tanganyika | Kenya Uganda and Tanganyika (stamp issuing country) 1935 - 1963 | Real | Africa |  |
| 3576 | Kenya Uganda and Tanzania | Kenya Uganda and Tanzania (stamp issuing country) 1965 - 1975 | Real | Africa |  |
| 3577 | Kenya Uganda Tanganyika and Zanzibar | Kenya Uganda Tanganyika and Zanzibar (stamp issuing country) 1964 - only | Real | Africa |  |
| 3578 | Kerrasunde (Russian Post Office) | Kerrasunde (Russian Post Office) (stamp issuing country) 1909 - 1910 | Real | Africa | |
| 3579 | Khalki | Khalki (stamp issuing country) 1912 - 1932 | Real | Asia |  |
| 3580 | Khania (Italian Post Office) | Khania (Italian Post Office) (stamp issuing country) 1900 - 1912 | Real | Europe | |
| 3581 | Khios | Khios (stamp issuing country) 1913 - only | Real | Europe | |
| 3582 | Khmer Republic | Khmer Republic (stamp issuing country) 1971 - 1975 | Real | Asia |  |
| 3583 | Kiangsi | Kiangsi (stamp issuing country) 1949 - only | Real | Asia |  |
| 3586 | Kiautschou | Kiautschou (stamp issuing country) 1901 - 1914 | Real | Asia |  |
| 3587 | King Edward VII Land | King Edward VII Land (stamp issuing country) 1908 - only | Real | Europe |  |
| 3588 | Kingdom of Libya: postal administration | Kingdom of Libya: postal administration (stamp issuing country) 1951 - 1969 | Real | Africa |  |
| 3589 | Kionga | Kionga (stamp issuing country) 1916 - only | Real | Africa |  |
| 3590 | Kiribati | Kiribati (stamp issuing country) 1979 - | Real | Africa |  |
| 3591 | Kirin and Heilungkiang | Kirin and Heilungkiang (stamp issuing country) 1927 - 1931 | Real | Asia |  |
| 3592 | Kishangarh | Kishangarh (stamp issuing country) 1899 - 1947 | Real | Asia |  |
| 3593 | Kiukiang | Kiukiang (stamp issuing country) 1894 - 1896 | Real | Asia |  |
| 3594 | Klaipeda | Klaipeda (stamp issuing country) 1923 - only | Real | Asia |  |
| 3596 | Kolchak Government | Kolchak Government (stamp issuing country) 1919 - 1920 | Real | Asia |  |
| 3597 | Korce (Koritza) | Korce (Koritza) (stamp issuing country) 1917 - 1919 | Real | Asia |  |
| 3598 | Korea (Empire) | Korea (Empire) (stamp issuing country) 1884 - 1910 | Real | Asia |  |
| 3599 | Korea (Indian Custodian Forces) | Korea (Indian Custodian Forces) (stamp issuing country) 1953 - only | Real | Asia |  |
| 3600 | Korea (Japanese Post Offices) 日本国 | Korea (Japanese Post Offices) (stamp issuing country) 1900 - 1901 | Real | Asia |  |
| 3601 | Kos | Kos (stamp issuing country) 1912 - 1932 | Real | Europe |  |
| 3602 | Kosovo | Kosovo (stamp issuing country) 2000 - | Real | Europe |  |
| 3603 | KouangTcheou | KouangTcheou (stamp issuing country) 1898 - 1943 | Real | Asia |  |
| 3604 | Kuban Territory | Kuban Territory (stamp issuing country) 1918 - 1920 | Real | Asia |  |
| 3605 | Kuwait | Kuwait (stamp issuing country) 1923 - | Real | Asia |  |
| 3607 | Kwangsi | Kwangsi (stamp issuing country) 1949 - only | Real | Africa |  |
| 3608 | Kwangtung (Japanese Occupation) | Kwangtung (Japanese Occupation) (stamp issuing country) 1942 - 1945 | Real | Asia |  |
| 3609 | Kyrgyzstan | Kyrgyzstan (stamp issuing country) 1992 - | Real | Asia |  |