William Timothy Gowers (born 1963) English mathematician, Fellow of the Royal Society. In 1998 he won the Fields Medal for research on functional analysis and combinatorics.

In addition to scholarly papers on mathematics, Gowers is also the author of A Very Short Introduction to Mathematics and other works popularizing mathematics. He was hired as a consultant for the film Proof, starring Gwyneth Paltrow and Anthony Hopkins.

Gowers has Erdős number 4: he collaborated with Maurey in 1989, who collaborated with Lindenstrauss in 1996, who collaborated with Preiss in 1976, who collaborated with Erdős in 1976.