| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
1901  | Tamba Itamba,Tamba | Tanzania, Katavi Mpanda District > Sibwesa | hill | S 6° 36′ 24'' | E 30° 43′ 28'' |
1902  | Issenye Isenye,Issenye | Tanzania, Mara Serengeti District Council > Issenye | populated place population 7,778 | S 2° 0′ 0'' | E 34° 20′ 0'' |
1903  | Isita | Tanzania, Mbeya | locality | S 8° 37′ 0'' | E 32° 50′ 0'' |
| 1904 | Ishuka Point Ischuka-Spitze,Ishuka Point | Tanzania, Mara Rorya District Council > Nyamagaro | point | S 1° 17′ 0'' | E 33° 54′ 0'' |
| 1905 | Ishbonidamust | Tanzania, Manyara | area | S 4° 35′ 0'' | E 35° 23′ 0'' |
| 1906 | Isangawale | Tanzania, Mbeya | locality | S 8° 26′ 0'' | E 33° 29′ 0'' |
| 1907 | Isalamagasi Isalamagasi,Iselamagazi,Iselomagazi | Tanzania, Shinyanga Shinyanga Rural > Iselamagazi | populated place | S 3° 32′ 0'' | E 33° 8′ 0'' |
| 1908 | Isalala Forest Reserve | Tanzania, Mbeya | forest reserve | S 8° 54′ 0'' | E 32° 38′ 0'' |
| 1909 | Iryenyi Irene,Iryenyi,Makongoro | Tanzania, Mara Rorya District Council > Rabour | hill | S 1° 27′ 0'' | E 34° 4′ 0'' |
| 1910 | Irunda Forest Reserve | Tanzania, Iringa | forest reserve | S 8° 27′ 0'' | E 35° 13′ 0'' |
| 1911 | Irome Irome,Iromue,Kiromue | Tanzania, Morogoro Ulanga District Council > Itete | hill | S 8° 43′ 0'' | E 36° 28′ 0'' |
| 1912 | Iringa Forest Reserve | Tanzania, Iringa | forest reserve | S 7° 45′ 0'' | E 35° 42′ 0'' |
| 1913 | Irenga Forest Reserve | Tanzania, Mbeya | forest reserve | S 8° 57′ 0'' | E 33° 45′ 0'' |
| 1914 | Irambokoma | Tanzania, | area | S 4° 29′ 0'' | E 34° 55′ 0'' |
| 1915 | Ipogoro Ipogoi,Ipogoro,Mapogoro | Tanzania, Mbeya Mbarali District > Miyombweni | populated place | S 8° 18′ 59'' | E 34° 41′ 56'' |
| 1916 | Ipangu | Tanzania, Mbeya | area | S 8° 32′ 0'' | E 33° 58′ 0'' |
| 1917 | Image Forest Reserve Image Forest Reserve | Tanzania, Iringa | forest reserve | S 7° 27′ 35'' | E 36° 10′ 3'' |
| 1918 | Image Image,Imagi | Tanzania, Iringa Kilolo District > Ibumu | populated place | S 7° 27′ 56'' | E 36° 7′ 35'' |
| 1919 | Ilunde Forest Reserve | Tanzania, Kigoma | forest reserve | S 5° 5′ 0'' | E 30° 28′ 0'' |
| 1920 | Ilongafipa Forest Reserve | Tanzania, Mwanza | forest reserve | S 3° 12′ 0'' | E 32° 57′ 0'' |
| 1921 | Ilomero Hill Forest Reserve | Tanzania, Tabora | forest reserve | S 4° 35′ 0'' | E 32° 50′ 0'' |
| 1922 | Ilegeja | Tanzania, Shinyanga | locality | S 4° 1′ 0'' | E 32° 31′ 0'' |
| 1923 | Ilambo | Tanzania, Iringa | area | S 8° 20′ 0'' | E 35° 52′ 0'' |
1924  | Lake Ilamba | Tanzania, Mbeya | lake | S 9° 23′ 0'' | E 33° 51′ 0'' |
| 1925 | Ilala  Ilala | Tanzania, Dar es Salaam Region Temeke District > Chang’ombe | section of populated place | S 6° 50′ 0'' | E 39° 16′ 0'' |
| 1926 | Ikweha | Tanzania, Iringa | area | S 8° 34′ 0'' | E 35° 32′ 0'' |
| 1927 | Ikumbi | Tanzania, Iringa | area | S 8° 10′ 0'' | E 35° 52′ 0'' |
| 1928 | Ikorongo | Tanzania, Mara | reserve | S 1° 50′ 0'' | E 34° 45′ 0'' |
| 1929 | Ikombo | Tanzania, Dodoma | area | S 5° 43′ 0'' | E 36° 4′ 0'' |
| 1930 | Ijogo Forest Reserve | Tanzania, Morogoro | forest reserve | S 6° 23′ 0'' | E 36° 51′ 0'' |
| 1931 | Ihumbu | Tanzania, Iringa | area | S 7° 57′ 0'' | E 35° 50′ 0'' |
| 1932 | Ihoho Forest Reserve | Tanzania, Mbeya | forest reserve | S 8° 57′ 0'' | E 33° 38′ 0'' |
| 1933 | Ihangana Forest Reserve | Tanzania, Iringa | forest reserve | S 8° 18′ 0'' | E 35° 43′ 0'' |
| 1934 | Ihanga Local Authority Forest Reserve Ihanga Local Authority Forest Reserve | Tanzania, Morogoro | forest reserve | S 8° 3′ 0'' | E 36° 38′ 0'' |
| 1935 | Igwata Forest Reserve | Tanzania, Geita | forest reserve | S 2° 58′ 0'' | E 32° 30′ 0'' |
| 1936 | Igurubi | Tanzania, Tabora Igunga District Council > Igurubi | populated place population 10,083 | S 4° 0′ 0'' | E 33° 42′ 0'' |
| 1937 | Igombe River Forest Reserve | Tanzania, Tabora | forest reserve | S 4° 35′ 0'' | E 32° 25′ 0'' |
| 1938 | Igombe Dam Forest Reserve | Tanzania, Tabora | forest reserve | S 4° 50′ 0'' | E 32° 42′ 0'' |
| 1939 | Igawilo | Tanzania, Mbeya | area | S 8° 37′ 0'' | E 34° 36′ 0'' |
| 1940 | Igalula | Tanzania, Shinyanga | locality | S 4° 6′ 0'' | E 32° 35′ 0'' |
| 1941 | Ifushiro | Tanzania, Mbeya | area | S 8° 37′ 0'' | E 34° 9′ 0'' |
| 1942 | Idewa Forest Reserve | Tanzania, Iringa | forest reserve | S 8° 17′ 0'' | E 35° 47′ 0'' |
| 1943 | Idahi Idahi,Idayi | Tanzania, Iringa Kilolo District > Mahenge | hill | S 7° 33′ 0'' | E 36° 17′ 0'' |
| 1944 | Idanda Arena | Tanzania, Kagera | reserve | S 1° 10′ 0'' | E 30° 35′ 0'' |
| 1945 | Iboyu Boyu,Iboyu,Poyo | Tanzania, Dodoma Mpwapwa District Council > Godegode | hill | S 6° 32′ 0'' | E 36° 30′ 0'' |
| 1946 | Iboja | Tanzania, Shinyanga | locality | S 4° 1′ 0'' | E 32° 29′ 0'' |
| 1947 | Ibindo Forest Reserve | Tanzania, Mwanza | forest reserve | S 2° 46′ 0'' | E 33° 29′ 0'' |
| 1948 | Hutitu Gurutitu,Hutitu,Lutitu | Tanzania, Morogoro Kilosa District > Kidete | hill | S 6° 35′ 0'' | E 36° 54′ 0'' |
| 1949 | Hundogo Forest Reserve | Tanzania, Pwani | forest reserve | S 6° 47′ 0'' | E 39° 0′ 0'' |
| 1950 | Honiwegereri | Tanzania, Manyara | area | S 4° 30′ 0'' | E 35° 17′ 0'' |
by