Theresa Marie Shank Grentz (born March 24, 1952) is an American college basketball coach.

Under coach Cathy Rush, Grentz helped Immaculata win three straight AIAW National Championships between 1972 and 1974.

[7] In 1973, Grentz was named to the team representing the US at the 1973 World University Games competition in Moscow, Soviet Union.

The USA team had to play the Soviet Union in the opening round, and lost to the hosts, 92–43.

[8] After graduating from Immaculata in 1974, Grentz began teaching sixth grade at an elementary school, while working as a part-time assistant coach at Saint Joseph's College (now University) in Philadelphia.

[9] Grentz later became head coach and compiled a 27–5 record in two seasons from 1974 to 1976, including an appearance in the 1976 AIAW Large College Regionals.

[10][11] In the 1980s, Rutgers moved from the AIAW to NCAA Division I, starting as an independent, non-conference member in 1981–82 before joining the Atlantic 10 Conference in 1983.

[10] The 1985–86 Rutgers team finished a perfect 16–0 in Atlantic 10 play and made the first of two consecutive Elite Eight appearances; The Star-Ledger awarded Grentz its Coach of the Year honor in women's basketball that season.

[13] At Rutgers, Grentz developed three All-American players: Kris Kirchner, June Olkowski, and Sue Wicks.

[6] Also, Wicks won National Player of the Year honors in 1987 and 1988 and was the sixth overall pick in the 1997 WNBA draft.

[6] In the 2014–15 season, Grentz was an assistant coach at Lafayette College under Dianne Nolan on a 14–17 team.

[16][17] After Nolan retired, on April 20, 2015, Lafayette College announced Theresa Grentz as their new head women's basketball coach.

[13][19] Grentz was selected as the head coach of the team representing the US in 1985 at the William Jones Cup competition in Taipei, Taiwan.

[20] Grentz served as coach of the USA team at the 1990 Goodwill games, and the 1990 World Championships.

[21] Grentz served as head coach of the 1992 Olympic team in Barcelona, which won the bronze medal.

[6] In 1990, Grentz was the head coach for the USA National team at the World Championships in Kuala Lumpur, Malaysia.

The team, behind the 22 point per game scoring of Teresa Edwards, won all eight contests, with only the win over Cuba decided by single digits.

[24] Grentz's father was an order selector at an A&P warehouse, and her mother was a nurse at the Mercy Fitzgerald Hospital in Darby, Pennsylvania.