Brian E. Dalrymple is a Canadian fingerprint scientist known for introducing the use of lasers (with colleagues Duff and Menzel) as a forensic light source for fingerprints and other evidence detection, using the Argon Ion Lasers to detect the inherent fluorescence of the latent fingerprints and finding fluorescing evidence.

[3] He was employed for twenty-eight years by the Ontario Provincial Police (OPP) before retiring.

During his career, he contributed numerous articles to industry magazines and journals and performed training around the world.

In 1977 a collaboration began between Brian Dalrymple and the Xerox Research Centre to develop a new method of using an argon ion laser to detect fingerprints by inherent fluorescence.

This use of the laser also led to the use of new staining chemicals on fingerprints to render them fluorescent.