John George Champion (1815–1854) was an English soldier, botanist, and explorer.
He was gazetted ensign in the 95th regiment in 1831, and embarked for foreign service in 1838, having then attained the rank of captain. After a stay in the Ionian Isles, his duties took him to Ceylon, and thence in 1847 to Hong Kong. During his time at the Ionian islands of Kerkyra (Corfu) and Kefalonia (Cefalonia), he published short notes on insect natural history under the pseudonym "Ionicus" (or "Jonicus"). He collected a great variety of plants from China, and he came back to England in 1850.
He came back in front of the Crimea combat, commanding the 95th Regiment, and he died in the Scutari hospital, on 30 November 1854 due to injuries received while he commanded his regiment in the battle of Inkerman.
Over seventy species have been named in his honour, including: