Tan Sri Datuk Seri Panglima Osu bin Sukam (Jawi: اوسو بن سوكم; born 19 February 1949) is a Malaysian politician who served as the 12th Chief Minister of Sabah from March 1999 to March 2001, Member of Parliament (MP) for Papar from August 1986 to March 2004 and Member of the Sabah State Legislative Assembly (MLA) for Kawang from February 1994 to March 2004. Following the rotation system in place at that time, Osu, an ethnic Bajau, held the post for two years representing the Muslim bumiputras of Sabah. In 2001, he was replaced by Chong Kah Kiat. Until 14 July 2005, he was a member of a ruling United Malays National Organisation (UMNO).