Effiong is both a surname and a masculine given name, commonly used in Nigeria. Notable people with the name include:
Surname Alfred Effiong (born 1984), Maltese international footballer Daniel Effiong (born 1972), Nigerian sprinter Moses Effiong (1959–2025), Nigerian footballer Nelson Effiong (born 1953), Nigerian politician Philip Effiong (1925–2003), Nigerian President of Biafra
Given name Effiong Dickson Bob (born 1959), Nigerian politician Effiong Okon Eyo (1918–1983), Nigerian politician Effiong Okon (born 1985), Nigerian boxer