Rennell may refer to:

People Baron Rennell Rennell Rodd, 1st Baron Rennell (1858–1941), British diplomat, poet and politician Francis Rodd, 2nd Baron Rennell (1895–1978), British army officer and diplomat Tremayne Rodd, 3rd Baron Rennell (1935–2006), Scottish rugby union player James Rennell (1742–1830), British geographer and pioneer oceanographer Paul Rennell, New Zealand soccer player Thomas Rennell (1754–1840), British clergyman Thomas Rennell (scholar) (1787–1824), British theologian and author

Places Rennell Island, Solomon Islands Rennell and Bellona Province Rennell Glacier, Antarctica Rennell Sound, Canada North Rennell Island, Chile South Rennell Island, Chile

Animals Rennell fantail Rennell flying fox Rennell shrikebill Rennell starling Rennell Island monitor

See also Renald Reynolds (disambiguation)