Richard Harvey Collin (March 4, 1932 – January 19, 2010, or January 20, 2010) was an American historian, university professor, restaurant critic, and cookbook writer. He was notable for his research in the life and presidency of Theodore Roosevelt. Collin's contributions to Theodore Roosevelt scholarship included his dissertation, two monographs on Roosevelt, editing a book length collection of papers on the President, journal articles, and book reviews related to other writers' works on the President. His food writing, much of it written together with his wife Rima, included cookbooks and restaurant reviews.