Kacper Śpiewak (born 30 May 2000) is a Polish professional footballer who plays as a forward for I liga club Polonia Warsaw.
Śpiewak began his senior club career playing for Stal Stalowa Wola, before signing with Bruk-Bet Termalica in 2020, winning the promotion to the Ekstraklasa in his first season.
[4] On 19 August 2020, Stal Stalowa Wola announced that I liga side Bruk-Bet Termalica Nieciecza activated Śpiewak's buyout clause.
[7] On 21 June 2023, Śpiewak signed a two-year contract with an extension option with I liga club Motor Lublin.
He made his first junior appearance in a 4–0 2023 UEFA European Under-21 Championship qualification's win over Germany U21 on 12 November 2021, coming on as a substitute for Adrian Benedyczak.