Theresa Ione "Tessa" Sanderson, (born 14 March 1956) is an English former javelin thrower and heptathlete.
A six-time Olympian in the javelin (1976–1996), she won the gold medal in 1984 for Great Britain, and in 1996 she became the second track and field athlete, after discus thrower Lia Manoliu, to compete at six Olympics.
She is one of only five women in history to have thrown the javelin (old model) over 73 metres.
She is the first black British woman to have won an Olympic gold medal.