Linnell is an English surname. People bearing this name include:
- Albert Paul Linnell (1922–2017), American astronomer
- Allison Linnell (b. 1990), American racing cyclist
- Derek Linnell (b. 1968), Canadian ice hockey player
- Francis John Linnell (1892–1944), RAF commander
- Jim Linnell, American leather craftsman
- John Linnell, multiple people including:
- John Linnell (cabinet maker) (1729–1796), English cabinet-maker
- John Linnell (painter) (1792–1882), English landscape painter
- John Wycliffe Linnell (1878–1967), British physician
- John Linnell (b. 1959), American rock musician who co-founded the band They Might Be Giants
- Stuart Linnell (born 1947), British broadcaster