Cyril O'Reilly (born June 8, 1958) is an American film and television actor, writer and producer.
O'Reilly was born in Los Angeles, California. He has worked in Hollywood for nearly three decades, and is known for his role as a reluctant vampire in Dance of the Damned, and for his role as Tim in Porky's and Porky's II: The Next Day.
He co-starred in the 1981 television movie Splendor in the Grass with Melissa Gilbert. In 2007, twenty-six years later, the two re-united in the television movie Sacrifices of the Heart. His other film work has included roles in Airplane!, The Cool Surface and Navy SEALs. He has appeared in a variety of television programs, including ER; Star Trek: Deep Space Nine; The X-Files; Beverly Hills, 90210; St. Elsewhere; Murder, She Wrote, and M*A*S*H.