Josh Oppenheimer (born January 15, 1969) is an American-Israeli professional basketball coach and former player. He was most recently an assistant coach for the Milwaukee Bucks of the National Basketball Association (NBA), and the Greek Basketball National team.

Oppenheimer played collegiately for Rhode Island and later Northern Arizona before embarking on a professional career in the United States and Europe. He spent two summers in the United States Basketball League playing for Atlanta, Philadelphia and Palm Beach and also logged a season in the Continental Basketball Association with Cedar Rapids. He also played the NBA Summer League and attended training camp with the Atlanta Hawks, the Los Angeles Clippers and the Sacramento Kings respectively. Oppenheimer spent six seasons in the Israeli Basketball Premier League.

Oppenheimer has coaching experience in the college ranks from Duquesne, Delaware, DePaul and Kent State.

Oppenheimer and his wife Adrienne, a former college volleyball player from Puerto Rico, have two daughters, Gabriella "Gabbi" (born July 2, 1996), who works in finance, and Nicolette "Nikki" (born June 22, 1999),^[6] who played basketball for James Madison University, having previously played for Syracuse University and Montini Catholic High School.^[7] Nicolette represented the Puerto Rico women's national under-18 team at the 2016 FIBA Americas Under-18 Championship for Women.^[8]

• List of foreign NBA coaches