Peter Olayinka Oladeji (born 18 November 1995) is a Nigerian footballer, who plays as Forward for Slavia Prague in the Fortuna Liga.
Olayinka started his career in army children with (Baba Boss) in Ibadan before moving to Lagos-based 36 Lion FC football academy, and in January 2012 he joined Bylis Ballsh in the Albanian Superliga, where he initially joined the club's under-19s due to being just 17 at the time. He was promoted to the senior team under Agim Canaj during the 2012–13 season, and he made his professional debut on 20 October 2012 in an Albanian Superliga game against Luftëtari Gjirokastër, in which he came on as an 84th-minute substitute for Jetmir Sefa in the 2–0 win. With the departure of Canaj and the arrival of Naci Şensoy as head coach in November, Olayinka received more playing time under Şensoy who showed faith in the young player. He scored his first goal on 3 February 2013 against Teuta Durrës an Albanian Cup tie that ended in a 2–2 draw. He scored again month later on 3 March against KF Laçi in a 3–2 away loss. He scored again in the Albanian Cup in the first leg of the semi-finals against Skënderbeu Korçë, scoring the first goal in a 1–1 draw at the Skënderbeu Stadium. He featured in 14 league games during the 2012–13 campaign without scoring, and helped his side narrowly avoid relegation to the Albanian First Division, starting 6 games and completing the full 90 minutes on 2 two occasions. He scored three times in the Albanian Cup in 10 appearances, as his side reached the final for the first time in their history. He started up front in the final against KF Laçi but was substituted off late in extra time, just before KF Laçi snatch the game through a Emiliano Çela winner in the 119th minute.