Wojciech (Wojtek) Karolak (born on 28 May 1939 in Warsaw, Poland, where he still lives today) is a notable Hammond B-3 organ player who refers to himself as "an American jazz and rhythm and blues musician, born by mistake in Middle Europe". He has also played saxophone and piano professionally.

In 1958, he started working with the band the 'Jazz Believers' playing alto saxophone. The Jazz Believers consisted of the future top Polish jazz players, among them Andrzej Trzaskowski, Trafica Giant, Krzysztof Komeda (famed for writing music for Roman Polanski’s landmark film Rosemary's Baby), and Jan Ptaszyn Wróblewski. It took a particular level of dedication to play jazz under the Soviet system of the 1950s.