Peter Mackenzie Millman (August 10, 1906 – December 11, 1990) was a Canadian astronomer.
In early 1941 he enlisted with the Royal Canadian Air Force.
He continued the work on meteors throughout his active scientific life.
He organized one of his most successful observational campaigns in 1946, when on the night of October 9/10 a spectacular shower of the Giacobinids (October Draconids) provided many important photographic spectra.
A crater on Mars and the minor planet 2904 Millman were named in his honor.