After graduating from Cornell University in 1974, he landed a part as coldhearted bigamist Ben Harper on the television soap opera "Love of Life." He also performed frequently on stage, winning his first Broadway role as the grandson of a character played by Katharine Hepburn in "A Matter of Gravity."

Reeve's first movie role was a minor one in the submarine disaster movie "Gray Lady Down," released in 1978. "Superman" soon followed. Reeve was selected for the title role from among about 200 aspirants.

Active in many sports, Reeve owned several horses and competed in equestrian events regularly. Witnesses to the May 1995 accident said Reeve's horse had cleared two of 15 fences during the jumping event and stopped abruptly at the third, flinging the actor headlong to the ground.

Doctors said he fractured the top two vertebrae in his neck and damaged his spinal cord. When he finally was released from a rehabilitation institute in December 1995, he thanked staffed members "who have set the stage for my continued journey." He underwent further rehabilitation at his home in upstate New York.

While filming "Superman" in London, Reeve met modeling agency co-founder Gae Exton, and the two began a relationship that lasted several years. The couple had two sons, but were never wed.

Reeve later married Dana Morosini; they had one son, Will, 11. His wife became his frequent spokeswoman after the accident.

Reeve also is survived by his mother, Barbara Johnson; his father, Franklin Reeve; his brother, Benjamin Reeve; and his two children from his relationship with Exton, Matthew, 25, and Alexandra, 21.

No plans for a funeral were immediately announced.

A few months after the accident, he told interviewer Barbara Walters that he considered suicide in the first dark days after he was injured. But he quickly overcame such thoughts when he saw his children.

"I could see how much they needed me and wanted me ... and how lucky we all are and that my brain is on straight."