Three men were struck by MTA trains, two fatally, in separate incidents early Tuesday, police said.

A man lying on the tracks inside the Bronx’s Bedford Park Blvd. subway station was fatally struck by an oncoming Manhattan-bound No. 4 train about 1:40 a.m., cops said. The motorman saw the victim on the tracks but was unable to stop the train in time.

The victim, who appeared to be homeless, died at the scene, police said.

About 7:05 a.m., a man jumped in front of an oncoming LIRR train pulling into the Forest Hills, Queens, station, cops said. The motorman saw the man leap onto the tracks as the train approached but could not stop in time, police said. The victim died at the scene.

About 8:10 a.m., a man landed on the tracks inside Brooklyn’s Euclid Ave. subway station, was struck by an A train and suffered a leg injury, officials said. He survived and medics took him Brookdale University Hospital. It wasn’t immediately clear how he ended up on the tracks.

Cops were working to determine the identities of all three victims struck during the seven-hour stretch.

The MTA temporarily suspended service at all three stations as cops investigated, officials said.