Stefan Guy Ratchford (born 19 July 1988) is an English retired rugby league footballer who last played as a fullback for the Warrington Wolves in the Super League and the England Knights and England international at international level.

He previously played for the Salford City Reds between 2007 and 2011 in the Super League and National League One. Throughout his career Ratchford played as a fullback, wing, centre, stand-off, scrum-half, hooker and loose forward.

Stefan Ratchford was born in Wigan, Greater Manchester, England.

He started playing rugby league at the age of six, initially playing junior rugby for Wigan St Cuthberts before later switching to Wigan St Patricks.

Ratchford signed with Salford City Reds in 2005, and made his first team début for the club in 2007 in a fourth round Challenge Cup match against Gateshead Thunder.

In 2008, following the club's relegation to National League One, Ratchford established himself as a regular first team player. He formed an effective halfback partnership alongside Richie Myler, helping the team win the Northern Rail Cup, and the Division One Grand Final.

Ratchford played in the 2012 Challenge Cup Final victory over Leeds at Wembley Stadium.

Ratchford played in the 2012 Super League Grand Final defeat by Leeds at Old Trafford.