His spokeswoman Linda Linden tells The New York Times that Spitzer was disappointed that his application for membership to the club in New York City was rejected. She noted that the school had asked him to speak last year and Spitzer gives financially to Harvard.
The club has declined to comment.
Spitzer resigned as governor in 2008 amid a prostitution scandal. This month, he joined CNN as a commentator.
The Harvard Club has more than 11,000 members. Membership is open to alumni and people with ties to the university. They must undergo an interview process before an admissions committee.