Felix Ibru was born on 7 December 1935 at Agbarha-Otor in the Ughelli North neighborhood government territory of Delta State to Chief Peter Epete Ibru and Chief (Mrs). Janet Omotogor Ibru, the second of seven kids. His sibling Michael Ibru is the founder of the Ibru Organization, a major conglomerate.
He was educated at Yaba Methodist School, and later Igbobi College where he was Head Boy in 1955. He won the Elder Dempster Lines Scholarship to go to the United Kingdom. After his secondary school education at Igbobi College, Ibru continued to the Nottingham School of Architecture in England where he qualified as a architect in 1962.