| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
2001  | Isanga | Tanzania, Shinyanga Shinyanga Urban > Mwawaza | hill | S 3° 42′ 0'' | E 33° 19′ 0'' |
| 2002 | Irundi | Tanzania, Iringa Mafinga Town Council > Sao Hill | hill | S 8° 27′ 0'' | E 35° 15′ 0'' |
| 2003 | Irumiru | Tanzania, Tabora Nzega District Council > Utwigu | hill | S 4° 25′ 0'' | E 33° 1′ 0'' |
| 2004 | Iruma Island | Tanzania, Mara | island | S 1° 41′ 0'' | E 33° 24′ 0'' |
| 2005 | Iroba Island | Tanzania, Kagera | island | S 1° 47′ 0'' | E 31° 50′ 0'' |
| 2006 | Iringa | Tanzania, Mara Musoma District Council > Bulinga | hill | S 1° 49′ 0'' | E 33° 23′ 0'' |
| 2007 | Iriga Island | Tanzania, Mara | island | S 1° 31′ 0'' | E 33° 37′ 0'' |
| 2008 | Iriga | Tanzania, Katavi Mpanda District > Mishamo | hill | S 5° 24′ 0'' | E 30° 21′ 0'' |
| 2009 | Irekwa | Tanzania, Singida Manyoni District Council > Mwamagembe | hill | S 6° 25′ 0'' | E 34° 10′ 0'' |
| 2010 | Iramba Plateau | Tanzania, Singida | upland | S 4° 25′ 0'' | E 34° 22′ 0'' |
| 2011 | Iputa | Tanzania, Dodoma Mpwapwa District Council > Galigali | mountain | S 6° 54′ 0'' | E 36° 33′ 0'' |
| 2012 | Ipungulu Ipungulu | Tanzania, Rukwa | hill | S 6° 54′ 35'' | E 30° 46′ 44'' |
| 2013 | Ipunga | Tanzania, Songwe Mbozi District Council > Ipunga | hill | S 9° 8′ 0'' | E 32° 47′ 0'' |
| 2014 | Ipumba Ipumba | Tanzania, Katavi Mpanda District > Mishamo | hill | S 5° 59′ 0'' | E 30° 28′ 0'' |
| 2015 | Ipuli | Tanzania, Singida Ikungi District Council > Issuna | hill | S 5° 21′ 0'' | E 34° 55′ 0'' |
| 2016 | Ipito Hill | Tanzania, Mbeya Chunya District Council > Kambikatoto | hill | S 7° 16′ 0'' | E 33° 31′ 0'' |
| 2017 | Ipiri | Tanzania, Manyara Babati Town > Bonga | hill | S 4° 19′ 0'' | E 35° 46′ 0'' |
| 2018 | Ipanza | Tanzania, Tabora Kaliua District Council > Zugimlole | hill | S 5° 20′ 0'' | E 31° 41′ 0'' |
| 2019 | Ipanga | Tanzania, Simiyu Bariadi District Council > Mwadobana | hill | S 2° 35′ 0'' | E 34° 5′ 0'' |
| 2020 | Ipalanganga | Tanzania, Morogoro Ulanga District Council > Iragua | hill | S 8° 31′ 0'' | E 36° 33′ 0'' |
| 2021 | Inolo | Tanzania, Dodoma Mpwapwa District Council > Luhundwa | hill | S 6° 47′ 0'' | E 36° 26′ 0'' |
| 2022 | Inner Sinda | Tanzania, Dar es Salaam Region | island | S 6° 49′ 30'' | E 39° 23′ 39'' |
| 2023 | Inner Makatumbe | Tanzania, Dar es Salaam Region | island | S 6° 47′ 57'' | E 39° 19′ 53'' |
| 2024 | Imalange | Tanzania, Shinyanga Kahama Rural District > Sabasabini | hill | S 3° 57′ 0'' | E 32° 16′ 0'' |
| 2025 | Imalakaseka | Tanzania, Shinyanga Kahama Rural District > Igwamanoni | hill | S 3° 47′ 0'' | E 32° 10′ 0'' |
| 2026 | Imagi | Tanzania, Dodoma Dodoma Urban District > Ntyuka | hill | S 6° 12′ 55'' | E 35° 44′ 46'' |
| 2027 | Ilyandi Sandy Ridge Ilyandi Sandy Ridge | Tanzania, Katavi | ridge(s) | S 6° 43′ 0'' | E 31° 0′ 31'' |
| 2028 | Ilunga Range | Tanzania, Mbeya | hills | S 8° 20′ 0'' | E 33° 0′ 0'' |
| 2029 | Ilundi | Tanzania, Mbeya Chunya District Council > Itewe | hill | S 8° 32′ 0'' | E 33° 20′ 0'' |
| 2030 | Ilundi | Tanzania, Dodoma Kongwa > Chamkoroma | hill | S 6° 21′ 0'' | E 36° 41′ 0'' |
| 2031 | Iluma | Tanzania, Singida Manyoni District Council > Sasilo | hill | S 6° 19′ 0'' | E 34° 43′ 0'' |
| 2032 | Iluli | Tanzania, Singida Manyoni District Council > Isseke | hill | S 6° 42′ 0'' | E 34° 44′ 0'' |
| 2033 | Ilowi | Tanzania, Dodoma Mpwapwa District Council > Mima | hill | S 6° 33′ 0'' | E 36° 5′ 0'' |
| 2034 | Ilomo | Tanzania, Songwe Songwe District > Kapalala | hill | S 8° 2′ 0'' | E 32° 34′ 0'' |
| 2035 | Ilomero | Tanzania, Tabora Nzega District Council > Milambo Itobo | hill | S 4° 44′ 0'' | E 32° 57′ 0'' |
| 2036 | Ilomba | Tanzania, Songwe Momba District Council > Chitete | hill | S 8° 47′ 0'' | E 32° 32′ 0'' |
| 2037 | Ilolo | Tanzania, Iringa Iringa Rural District > Migoli | hill | S 7° 5′ 0'' | E 35° 43′ 0'' |
| 2038 | Ilole Ilole | Tanzania, Dodoma Mpwapwa District Council > Ipera | hill | S 7° 8′ 0'' | E 36° 28′ 0'' |
| 2039 | Ilima Hill | Tanzania, Mbeya Rungwe District Council > Ilima | hill | S 9° 27′ 0'' | E 33° 41′ 0'' |
| 2040 | Ilege | Tanzania, Shinyanga Kahama Rural District > Bulungwa | hill | S 3° 57′ 0'' | E 32° 11′ 0'' |
| 2041 | Ilangala | Tanzania, Tanga Kilindi District > Pagwi | hill | S 5° 57′ 0'' | E 37° 10′ 0'' |
| 2042 | Ilalanguru | Tanzania, Songwe Mbozi District Council > Nambinzo | hill | S 8° 43′ 0'' | E 32° 37′ 0'' |
| 2043 | Ikusu Ikusu | Tanzania, Katavi Mpanda District > Mwese | hill | S 6° 0′ 0'' | E 30° 26′ 0'' |
| 2044 | Ikuse | Tanzania, Katavi Mpanda District > Mpandandogo | hill | S 5° 52′ 0'' | E 30° 43′ 0'' |
| 2045 | Ikuru Island | Tanzania, Mwanza | island | S 2° 15′ 0'' | E 32° 33′ 0'' |
| 2046 | Ikunwa | Tanzania, Dodoma Kongwa > Nghumbi | hill | S 6° 14′ 0'' | E 36° 49′ 0'' |
| 2047 | Ikungu | Tanzania, Mwanza Misungwi district > Misasi | hill | S 3° 0′ 0'' | E 33° 2′ 0'' |
| 2048 | Ikowe | Tanzania, Songwe Songwe District > Gua | hill | S 7° 43′ 0'' | E 32° 17′ 0'' |
| 2049 | Ikowa | Tanzania, Dodoma Chamwino > Msamalo | hill | S 6° 16′ 0'' | E 36° 12′ 0'' |
| 2050 | Ikore | Tanzania, Kilimanjaro Same District Council > Vumari | hill | S 4° 2′ 0'' | E 37° 53′ 0'' |
by