Lorenzo Lamas - the son of Arlene Dahl and Fernando Lamas - was raised in Pacific Palisades, California In 1968 his family moved to New York. he attended private school, graduating from Admiral Farragut Academy in 1975. He then moved back to California. With encouragement from his father, he enrolled in Tony Barr's Film Actors Workshop and began his career with a small role in a television show in 1976. He also began to study karate and tae kwon do in 1979.
His first marriage, to Victoria Hilbert, ended in 1983. Abby Dalton, his "Falcon Crest" (1981) colleague, introduced Lorenzo to her then, 17-year-old daughter Kathleen Kinmont. Lamas meanwhile had a short (two-year) marriage to the press spokeswoman for "Falcon Crest", 26-year-old Michelle Smith, which produced a son (one of Lamas' "Falcon Crest" co-stars, Daphne Ashbrook, accused Lamas of fathering her child, also). After their divorce, Lorenzo and Kathleen married on Jan. 25 1985, in Las Vegas. That marriage ended with divorce, too, but they continued together in the TV series "Renegade" (1992). In the middle of season four, Kathleen was cut out because of Lorenzo's interest in Shauna Sand (then known as Shauna Sand).
Lamas is an avid Harley-Davidson motorcycle enthusiast, collects them and takes part in charity rides for a transplant fund.