Richard Rusczyk (/ˈrʌsɪk/; Polish: [ˈrustʂɨk]; born September 21, 1971) is the founder and chief executive officer of Art of Problem Solving Inc. (as well as the website, which serves as a mathematics forum and place to hold online classes) and a co-author of the Art of Problem Solving textbooks.

[4] In 1994, Rusczyk and Sandor Lehoczky wrote the Art of Problem Solving books, designed to prepare students for mathematical competitions by teaching them concepts and problem-solving methods rarely taught in school.

After working for four years as a bond trader for D. E. Shaw & Co., Rusczyk created the Art of Problem Solving website, which provides resources for middle and high school students to develop their mathematics and problem-solving abilities.

Rusczyk has also published the Art of Problem Solving series of books aimed at a similar audience.

Rusczyk founded and serves on the board of the nonprofit Art of Problem Solving Initiative, which manages the United States of America Mathematical Talent Search (USAMTS) and finances numerous local math initiatives around the United States.

[5] Art of Problem Solving also has a vast community of over 500,000 math, computer science, and physics enthusiasts.

During his studies at Princeton University, he also wrote the Art of Problem Solving Volumes 1 and 2 with Sandor Lehoczky.