Mariusz Okoniewski (born February 10, 1956 in Poznan, Poland - death February 10, 2006 in Smigiel, Poland) was a Polish motorcycle speedway rider who was won Team Speedway Polish Championship six times and Polish Silver Helmet in 1976.
His son Rafal (b.
1980) is a speedway rider also.
Rafal is only double Individual U-19 European Champion.
Mariusz Okoniewski died on his 50th birthday.