Ryan Kotlewski (born February 21, 1990) is a Canadian international rugby union player.
A prop from Calgary, Alberta, Kotlewski played for Prairie Wolf Pack in the Canadian Rugby Championship and had several seasons in Australia with the Canberra Royals, where he won a ACTRU premiership in 2015.
Kotlewski relocated to Greater Victoria in 2016 and began playing his rugby with Westshore RFC.
Between 2016 and 2019, Kotlewski was a member of the Canada national team, gaining six caps.