John William Sattler (born 28 July 1942) is a former professional and national representative rugby league footballer who played in the 1960s and 1970s. He was a rugged Prop forward who captained his club, South Sydney to four premiership victories from 1967 to 1971 and who played four Tests for Australia – three as national captain. Known as "Satts", he was one of the hardmen of Australian rugby league and was regarded an aggressive on field player but a softly spoken gentleman off the field - hence his other nickname "Gentleman John". His son Scott Sattler was also a professional rugby league footballer and won a national premiership with the Penrith Panthers in 2003.