Muhammad Isman Thoyib (born August 18, 1984) is a former Indonesian professional basketball player.

Played 19 season in the IBL, he won 6 championships with Dell Aspac Jakarta and was known for being the main center for the Indonesia national basketball team.

Thoyib competed for the Indonesia national basketball team at the FIBA Asia Championship 2009 for the first time.

[1] He averaged 2.6 points and 5.8 rebounds per game for the team.