| Record Number | Keyword(s) | Country | Catalog Listed? | Continent | |
| 2938 | Z. AFR. REPUBLIEK | Transvaal. | Real | Africa |  |
| 2939 | Z.A.R. (overprint on stamps of Cape of Good Hope) | Cape of Good Hope- British occuaption of Vryburg (1899) [Zuid Africaansche Republiek (South African Republic)]. | Real | Africa |  |
| 2940 | Z.M. (overprint) | Mexico- Zacatecas provisionals. | Real | Americas |  |
| 2941 | ZA GRUENI KRST | Yugoslavia, postal tax stamps. | Real | Europe | |
| 2942 | ZA RDECI KRST | Yugoslavia, postal tax stamps. | Real | Europe | |
| 2943 | ZAIRE | Congo (1971-present) | Real | Africa |  |
| 2944 | ZANZIBAR (overprint on stamps of British East Africa) | Zanzibar (1895-6). | Real | Africa |  |
| 2945 | ZANZIBAR (overprint on stamps of France) | France- Offices in Zanzibar (1894-1900). | Real | Africa |  |
| 2946 | ZANZIBAR (overprint on stamps of India) | Zanzibar (1895-6). | Real | Africa |  |
| 2947 | ZANZIBAR with TANZANIA | Zanzibar (1965-8). | Real | Africa |  |
| 2948 | ZARSKA BULGARIA POSTA | Bogus Bulgarian stamps printed in Madrid, 1963-4. | Not Scott Listed | Europe | |
| 2949 | ZEGELREGT | Transvaal (1895). | Real | Africa |  |
| 2950 | ZEITUNGS MARKE | Austria, newspaper stamps. | Real | Europe |  |
| 2951 | ZEITUNGS MARKE DEUTESCHES REICH | Germany, newspaper stamps. | Real | Europe |  |
| 2952 | ZEITUNGS STAEMPLE | Austria, newspaper stamps. | Real | Europe | |
| 2953 | ZEITUNGS STAMPLE | Austria, newspaper stamps. | Real | Europe | |
| 2954 | ZEITUNGS STEMPLE | Austria, newspaper stamps. | Real | Europe | |
| 2955 | ZELAYA | Nicaragua- Zelaya (1904-11). | Real | Americas | |
| 2956 | ZELAYA (overprint on stamps of Nicaragua) | Nicaragua- Zelaya (1904-11). | Real | Americas |  |
| 2957 | ZENTRALER KURIERDIENST | Germany- German Democratic Republic, officials (1956-7). | Real | Europe |  |
| 2958 | ZEPPELIN 1930 (overprint) | Iceland and Finland, airmails. | Real | Europe |  |
| 2959 | ZEPPELIN POST | Liechtenstein, airmails. | Real | Europe |  |
| 2960 | ZOMERZEGEL | Netherlands, semipostals. | Real | Europe |  |
| 2961 | ZONA DE OCCUPATIE P.T.T. 1919 ROMANA (overprint) | Hungary- Romanian occupation (1919). | Real | Europe |  |
| 2962 | ZONA DE PROTECTORADO ESPANOL EN MARRUECOS (overprint on stamps of Spain) | Spanish Morocco (1916-25). | Real | Africa |  |
| 2963 | ZONE FRANCAISE BRIEFPOST | Germany- French occupation (1945-6). | Real | Europe |  |
| 2964 | ZRACNA POSTA | Yugoslavia- Zone B- Trieste. | Real | Europe |  |
| 2965 | ZUID AFRIKAANSCHE REPUBLIEK | Transvaal. | Real | Africa |  |
| 2966 | ZUIDWEST AFRIKA | South West Africa. | Real | Africa | |
| 2967 | ZUIDWEST AFRIKA (overprint on stamps of South Africa) | South West Africa (1923-5). | Real | Africa |  |
| 2968 | ZULASSUNGSMARKE DEUTCHER FELDPOST | Germany, fieldpost permit stamps for military parcels (1942). | Real | Europe |  |
| 2969 | ZULULAND (overprint on stamps of Great Britain) | Zululand (1888-94). | Real | Africa |  |
| 2970 | ZULULAND (overprint on stamps of Natal) | Zululand (1888-94). | Real | Africa |  |
| 2971 | ZURICH | Switzerland- Zurich (1843-6). | Real | Europe |  |
| 2972 | ZURINO (overprint) | Hungary, newspaper stamps used by Croatians for special delivery letters [Quick]. | Real | Europe | |
| 3145 | Zaire | Zaire (stamp issuing country) 1971 - | Real | Africa |  |
| 3146 | Zambezia | Zambezia (stamp issuing country) 1894 - 1917 | Real | Africa |  |
| 3147 | Zambia | Zambia (stamp issuing country) 1964 - | Real | Africa |  |
| 3148 | Zante (German Occupation) | Zante (German Occupation) (stamp issuing country) 1943 - 1945 | Real | Europe |  |
| 3149 | Zanzibar | Zanzibar (stamp issuing country) 1895 - 1967 | Real | Africa |  |
| 3151 | Zanzibar (French Post Office) | Zanzibar (French Post Office) (stamp issuing country) 1889 - 1904 | Real | Africa |  |
| 3152 | Zanzibar (German Postal Agency) | Zanzibar (German Postal Agency) (stamp issuing country) 1890 - 1891 | Real | Africa |  |
| 3153 | Zelaya, Nicaragua | Zelaya, Nicaragua (stamp issuing country) 1904 - 1912 | Real | Americas |  |
| 3154 | Zil Elwannyen Sesel | Zil Elwannyen Sesel (stamp issuing country) 1980 - | Real | Asia |  |
| 3155 | Zimbabwe | Zimbabwe (stamp issuing country) 1980 - | Real | Africa |  |
| 3156 | Zululand | Zululand (stamp issuing country) 1888 - | Real | Africa |  |
| 3157 | Zürich | Zürich (stamp issuing country) 1843 - 1850 | Real | Europe |  |