Samuel Kalu Ojim (born 26 August 1997) is a Nigerian professional footballer who plays as winger.

On 9 December 2015, Kalu agreed to sign a two-year contract with Slovak side AS Trenčín,[3] a partner club with GBS Academy at the time.

[4] On 4 January 2017, after his impressive displays in the Slovak League with Trenčín, Kalu was transferred to Belgium top division club KAA Gent.

[8] On 7 September 2023, Kalu joined Swiss Super League club FC Lausanne-Sport on a season long loan from Watford.

Kalu collapsed whilst participating in a team training session during the AFCON 2019 held in Egypt.