Herbert Saul Wilf (June 13, 1931 – January 7, 2012) was an American mathematician, specializing in combinatorics and graph theory.

He was the Thomas A. Scott Professor of Mathematics in Combinatorial Analysis and Computing at the University of Pennsylvania.

One of Wilf's former students is Richard Garfield, the creator of the collectible card game Magic: The Gathering.

[1] In 1996, Wilf received the Deborah and Franklin Haimo Award for Distinguished College or University Teaching of Mathematics.

[2] In 1998, Wilf and Zeilberger received the Leroy P. Steele Prize for Seminal Contribution to Research for their joint paper, "Rational functions certify combinatorial identities" (Journal of the American Mathematical Society, 3 (1990) 147–158).