Dominikus Saku (born 3 April 1960) is an Indonesian Roman Catholic bishop.

[2] Afterbeing ordained Saku studied at Pontifical Urban University in Rome from 1995 to 1999.

[2] On 21 September 2007 Saku was ordained bishop by Ratu, with Peter Turang, then archbishop of Kupang, and Gerulfus Kherubim Pareira S.V.D., then bishop of Weetebula, were the co-consecrators.

[1] In 2018 Saku held a conference where he discussed the issue of providing for migrants into Indonesia from neighboring Timor Leste.

He emphasized that migrants need to be treated with dignity and respect in Indonesia.