Frank John Lubin (Lithuanian: Pranas Jonas Lubinas; January 7, 1910 – July 8, 1999) was a Lithuanian-American basketball player.

[3] While playing college basketball at the University of California, Los Angeles, from 1928 to 1931, Lubin earned All-Pacific Coast Conference honors in his senior season with the Bruins.

Following his college career, he worked as a stagehand at Universal Pictures, and joined the studio's AAU team, which earned the right to represent the U.S. as part of the first Olympic basketball tournament in 1936, where he won the gold.

[3] Afterwards, Lubin fled Lithuania to California with his family, in the face of the upcoming Soviet invasion that happened one year later.

For his contributions and for introducing the now basketball-mad country of Lithuania to the sport, Lubin is often called the "grandfather of Lithuanian basketball".