Isaac Swain (1874 – 1963) was an Irish professor of geology.
Swain attended the Friends' School, Lisburn, and Royal College of Science for Ireland, graduating with a BA and MSc.
He was a demonstrator in geology at the Royal College from 1906 to 1910.
[1][2] Swain was a member of the Royal Irish Academy and oversaw the geological elements of the Clare Island Survey from 1909 to 1911.
He was professor of geology and geography in University College Cork from 1909 to 1944, with no additional staff.