Alexander Popov (born 3 February 1942) is an Australian architect working in the Late 20th Century Modern style.

Popov was born in Shanghai, China to Russian parents and moved to Sydney aged twelve.

Popov graduated in architecture from the Royal Danish Academy of Art in 1971 and then worked with Henning Larsen and Jørn Utzon (to whose daughter Lin he was married for 15 years).

The practice is now known as PopovBass with both Australian architect Brian Bass and Alex Popov as directors.

An original monograph on Popov's earlier works, titled Alex Popov: Buildings and Projects with text by Paul McGillick and photography by Kraig Carlstrom, was published by Axel Menges, Stuttgart.