Obi is a surname and a given name. People bearing the name include:
Surname:
Anthony Obi, Nigerian army officer and politician
Chike Obi (1921–2008), Nigerian politician and mathematician
Jide Obi (born 1962), Nigerian musician
Joel Obi (born 1991), footballer
Paul Obi, Nigerian military officer and politician
Peter Obi (born 1961), Nigerian politician
Yukimasa Obi (born 1978), Japanese voice actor
Given name:
Obi Ikechukwu Charles (born 1985), Nigerian footballer
Obi Egbuna (born 1938), Nigerian-born novelist, playwright and political activist in the UK
Obi Ezeh (born 1988), American football player
Obi Emmanuel Moneke (born 1983), Nigerian footballer