Some formats in GPSBabel support multiple datums. For example, the
datum option to the
garmin_txt format allows you to specify
a datum for the output file.
The following is a list of the datums supported by GPSBabel.
| Adindan | Cuba NAD27 | La Reunion | Qornoq |
| AFG | Cyprus | Liberia 1964 | Quatar National |
| Ain-El-Abd | Djakarta(Batavia) | Luzon | Rome 1940 |
| Alaska-NAD27 | DOS 1968 | Mahe 1971 | S-42(Pulkovo1942) |
| Alaska-Canada | Easter lsland 1967 | Marco Astro | S.E.Asia_(Indian) |
| Anna-1-Astro | Egypt | Masirah Is. Nahrwan | SAD-69/Brazil |
| ARC 1950 Mean | European 1950 | Massawa | Santa Braz |
| ARC 1960 Mean | European 1950 mean | Merchich | Santo (DOS) |
| Asc Island 58 | European 1979 mean | Mexico NAD27 | Sapper Hill 43 |
| Astro B4 | Finnish Nautical | Midway Astro 61 | Schwarzeck |
| Astro Beacon E | Gandajika Base | Mindanao | Sicily |
| Astro pos 71/4 | Geodetic Datum 49 | Minna | Sierra Leone 1960 |
| Astro stn 52 | Ghana | Montjong Lowe | S. Am. 1969 mean |
| Australia Geo 1984 | Greenland NAD27 | Nahrwan | South Asia |
| Bahamas NAD27 | Guam 1963 | Naparima BWI | Southeast Base |
| Bellevue IGN | Gunung Segara | North America 83 | Southwest Base |
| Bermuda 1957 | Gunung Serindung 1962 | N. America 1927 mean | Tananarive Obs 25 |
| Bukit Rimpah | GUX1 Astro | Observatorio 1966 | Thai/Viet (Indian) |
| Camp_Area_Astro | Herat North | Old Egyptian | Timbalai 1948 |
| Campo_Inchauspe | Hjorsey 1955 | Old Hawaiian_mean | Tokyo mean |
| Canada_Mean(NAD27) | Hong Kong 1963 | Old Hawaiian Kauai | Tristan Astro 1968 |
| Canal_Zone_(NAD27) | Hu-Tzu-Shan | Old Hawaiian Maui | United Arab Emirates |
| Canton_Island_1966 | Indian | Old Hawaiian Oahu | Viti Levu 1916 |
| Cape | Iran | Oman | Wake Eniwetok 60 |
| Cape_Canaveral_mean | Ireland 1965 | OSGB36 | WGS 72 |
| Carribean NAD27 | ISTS 073 Astro 69 | Pico De Las Nieves | WGS 84 |
| Carthage | Johnston Island 61 | Pitcairn Astro 67 | Yacare |
| Cent America NAD27 | Kandawala | S. Am. 1956 mean(P) | Zanderij |
| Chatham 1971 | Kerguelen Island | S. Chilean 1963 (P) | Sweden |
| Chua Astro | Kertau 48 | Puerto Rico | |
| Corrego Alegre | L.C. 5 Astro | Pulkovo 1942 |