Paul Mbwebwe Mbiya-Kalambayi (born 9 July 1999) is an English professional footballer who plays as a central defender for National League club Dagenham & Redbridge.

[2][7] Kalambayi received his first call-up of the 2017–18 season as a substitute for an EFL Trophy group stage match versus Barnet and made his senior debut when he replaced Callum Kennedy after 66 minutes of the 4–3 victory.

[8] He made one further EFL Trophy appearance during the season and spent a month on loan at Isthmian League Premier Division club Tonbridge Angels.

[8][9] Kalambayi was named as the Development Squad captain for the 2018–19 season and his EFL debut came with a start in a 2–1 defeat to Portsmouth on New Year's Day 2019.

[29] On 14 June 2024, Kalambayi signed a two-year contract with National League club Dagenham & Redbridge on a free transfer.