What is Obi-Wan Kenobi's master's name?

Obi-Wan Kenobi's master was Qui-Gon Jinn. Qui-Gon trained Obi-Wan as his Jedi Padawan, making him the mentor who guided Obi-Wan before he became a Jedi Knight.

Their relationship is central to Star Wars: Episode I – The Phantom Menace. During their mission to Naboo, Qui-Gon and Obi-Wan encountered Anakin Skywalker on Tatooine. Qui-Gon believed Anakin was the prophesied Chosen One and asked Obi-Wan to train him after Qui-Gon was mortally wounded by Darth Maul.

A common mix-up is Yoda, who helped train Obi-Wan during his early years as a Jedi youngling but was not his personal master. Mace Windu was another senior Jedi Master on the Jedi Council, not Obi-Wan's teacher. Anakin Skywalker later became Obi-Wan's Padawan, reversing the mentor-student relationship.

Qui-Gon himself had once been the apprentice of Count Dooku, who later became the Sith Lord Darth Tyranus. After Qui-Gon's death, Obi-Wan continued his master's legacy by training Anakin and later learned to communicate with Qui-Gon's spirit through the Force.