Carol Alt is an American model and actress. Carol Alt was born the daughter of Muriel, an airline employee and model, and Anthony, a fire chief. She was noticed waiting tables in her hometown of East Williston, New York. When she was 18, she decided to try modeling as a summer job.

Carol Alt is of German, Belgian and Irish descent. She was married to former New York Rangers player Ron Greschner from 1983 to 1996. While married she had a 4-years lasting affair with Brazilian Formula 1 star Ayrton Senna, up until his death in 1994.

As of November, 2008, the former couple are in court, with Carol Alt suing her ex-husband with claims that he failed to divide the profits of an investment the couple made while still married. She has been in a long term relationship for over 12 years with Alexei Yashin.