Brian Oladapo Idowu is a Russian-Nigerian professional football player who currently plays as a left-back for FC Amkar Perm and Nigeria.

Born in Saint Petersburg to a Nigerian father and a Russian-Nigerian mother, Idowu moved to Owerri, Nigeria at early age, and later moved to Russia. He made his Russian Premier League debut for FC Amkar Perm on 6 May 2012 in a game against FC Terek Grozny. After a loan spell with Dynamo St.Petersburg during the 2013–14 season, Idowu signed a new 3-year deal with Amkar on 30 June 2014, extending his contract again in February 2017 until the summer of 2020.

In November 2017, Idowu was called up to the Nigerian national team for their friendly against Argentina in Krasnodar on 14 November 2017. Idowu made his debut against Argentina on 14 November, coming on as a half-time substitute for Ola Aina, and scoring Nigeria's third goal in a 4-2 win.