Andrei Nazarov (born January 9, 1965 in Tallinn) is a retired decathlete, who competed for the Soviet Union and later for his native country Estonia. His personal best in the men's decathlon was 8322 points, achieved in 1987 (Sochi).
After retiring as a decathlete, Nazarov started coaching. He has coached decathlete Erki Nool and heptathlete Larisa Netšeporuk. As of 2009, he coaches long jumper and sprinter Ksenija Balta, long jumper Tõnis Sahk, triple jumper Lauri Leis, and decathlete Indrek Turi.
He was married to Lithuanian heptathlete Remigija Nazarovienė.