William Norwood Cheesman (1 February 1847 – 7 November 1925) was an English businessman and mycologist from Selby who contributed to studies on fungi and slime moulds as an amateur and founding member of the Yorkshire Naturalists' Union and the British Mycological Society.

He contributed principally as a collector with most species described by others including George Edward Massee.

He joined the drapery business along with an uncle at Selby in 1870 but in 1878 he became interested in fungi.

He began to collect specimens across the regions where he travelled including to South Africa as part of the British Association which he joined in 1900.

[4] Cheeseman was a prominent Freemason, writing papers on the subject, and was appointed a Justice of Peace in the last year of his life.