Theodorus Jacob de Jong (born 11 August 1947) is a Dutch former professional footballer and former football coach.
During his career, he played for NEC Nijmegen and Feyenoord Rotterdam. He earned 15 caps and scored 3 goals for the Netherlands national team and played for them in the 1974 FIFA World Cup Final.
De Jong was a member of the Feyenoord team that won the UEFA Cup in 1974, beating Tottenham Hotspur in the then two-legged final. He later played three seasons in Hong Kong for Seiko.
His son, Dave de Jong, was also a professional footballer.
Scores and results list the Netherlands' goal tally first, score column indicates score after each De Jong goal.
"Theo de Jong koopt Finse club". telesport. 20 December 1999.
"Jani Kauppila – looking to secure a regular place in the Rangers squad". 3 April 2001. Archived from the original on 4 June 2011.