Bernadette Suau (3 September 1942 – 8 December 2013) was a French archivist and historian. She was deputy director of the Eure departmental archives from 1972 to 1978, director of the Landes departmental archives from 1978 to 1992, and director of the Haute-Garonne departmental archives from 1992 to 2003.

Suau is the author or publication director of numerous works relating to history and heritage, of several exhibition catalogues that she has organised in Landes and Haute-Garonne, and of archive registers. She is one of the authors of the 'Histoire de la Gascogne contemporaine (1983), and the main author and publication director of the biographical dictionary Mémoire des Landes (1991). She was a member of several associations and learned societies, including the Archaeological Society of the South of France and the Historical Federation of Midi-Pyrénées, of which she was the general secretary.