John Walter Guerrier Lund CBE FRS[1] (27 November 1912 – 21 March 2015) was an English phycologist.

[7] He worked for a time as a Lecturer at the University of Sheffield, and then joined the West Midlands Forensic Science Laboratory as Staff Biologist.

[9] He retired in 1978, was appointed Deputy chief scientific officer and then Honorary Advisor to the FBA.

In 1991 he was elected an FBA Honorary Fellow, and continued to work at the Ferry House laboratory until 2005.

[12] He was elected a Fellow of the Royal Society (FRS) in 1963[1] and made Commander of the Most Excellent Order of the British Empire (CBE) in 1975.