Matthew Fisher (born Matthew Charles Fisher, 7 March 1946 in Addiscombe, Croydon, Surrey, England) is the Hammond organist, singer-songwriter, and the man responsible for the organ sound on the 1967 single "A Whiter Shade of Pale".

He was a member of Procol Harum; producer to Robin Trower, James Dewar and Tir Na Nog (among others); and enjoyed a solo career, being especially popular in Greece. His solo albums include "Journey's End" (1973), "I'll Be There" (1974), "Matthew Fisher" (1980), and "Strange Days" (1981).

Two of the albums he produced for Trower, Bridge of Sighs (1974) and For Earth Below (1975), have been certified gold by the RIAA, whilst "A Whiter Shade of Pale" has enjoyed multi-platinum status. Fisher's Hammond organ playing on pianist David Lanz's instrumental version of "A Whiter Shade of Pale" from his 1988 CD, Cristofori's Dream, helped that album go gold as well.

Fisher co-produced an album by the group Prairie Madness in 1972, on which he also played organ and harpsichord. This was a piano-guitar duo with an accompanying band, but it achieved limited success.

Fisher quit Procol Harum in 1969 after the release of their third album, A Salty Dog, which he also produced. He rejoined the band in 1991 for the album The Prodigal Stranger and released two more albums with them, One More Time and The Well's on Fire. In addition he appeared on two concert DVDs, "Live in Copenhagen" and "Live at the Union Chapel", but quit the band again in 2004. He is currently a computer programmer in Croydon, Surrey.

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