Mabel Colhoun (2 November 1905 – 1992), was a Derry-based pioneering photographer, teacher and archaeologist.

Colhoun documented archaeological monuments and transcribed stories and folklore in Ireland, many previously unrecorded.

[5][3] She created an archive of historically useful material and her collections were donated to the Tower Museum in Derry which has since held exhibitions of her work.

[3] Her detailing of history included writing, sketches and thousands of photographs which are now being digitised by the archaeologist Denise Henry.

In 2017 she was commemorated with a blue plaque from the Ulster History Circle to an "educationalist, historian, and archaeologist" on the museum.