Bernard Mensah (born 17 October 1994) is a Ghanaian footballer who plays as an attacking midfielder for Portuguese club Vitória de Guimarães, on loan from Atlético Madrid.
Born in Accra, Bernard joined Vitória de Guimarães' youth setup in 2012, after starting it out at Feyenoord Ghana. He made his senior debuts with the reserves in the 2012–13 campaign, scoring nine goals and earning promotion to Segunda Liga.
On 4 July 2014 Bernard renewed his contract until 2018, being promoted to the main squad on the 18th. He made his professional – and Primeira Liga – debut on 16 August, starting and scoring his side's second in a 3–1 away win against Gil Vicente FC.
Seven days later, Bernard scored a brace in a 3–0 home success over FC Penafiel. His fourth league goal came on 14 September, netting through a penalty in a 1–1 draw against FC Porto also at the Estádio D. Afonso Henriques.
Bernard was linked to a possible move to Manchester United in May 2015, being also a target of Juventus and Valencia CF. He finished his first season in the Portuguese top flight with 30 appearances and five goals, with his side finishing fifth.