A Crown Heights woman died yesterday when she fell off the platform at the Utica Avenue/Eastern Parkway station into the path of an incoming No. 3 train, authorities said.

Sheila Watkins, 47, who lived on Lincoln Place, was standing with her back to the tracks at about 10:40 a.m. when she may have fainted, sources said.

Later in the day, a man died after being struck by a Metro-North train in The Bronx, officials said.

The man was trespassing when he was hit by a Stamford-bound train at the 238th Street station in Woodlawn Heights at 6:50 p.m.