Connor Muhleisen (/mʌlaɪzən/) (born 19 February 2001) is an Australian professional rugby league player who plays as a hooker for the St. George Illawarra Dragons in the National Rugby League and NSW Cup.

Muhleisen was born in Wollongong, New South Wales.

He played junior rugby league for Thirroul Butchers.

[2] A Wollondilly junior, Muhleisen was contracted to the St. George Illawarra Dragons as a junior coming through the ranks through the academy system.

[3] In round 22 of the 2023 NRL season, Muhleisen made his first grade debut for the St. George Illawarra Dragons in his side's 24−18 loss to Manly at WIN Stadium.