A brute shoved a 73-year-old grandma onto the subway tracks during a fight on a Brooklyn platform, police said Monday.

The encounter unfolded around 1:45 p.m. at the C train’s Clinton-Washington stop, where an unknown man got into a fight with the elderly woman’s husband and grandson in his 30s, according to police and sources.

The attacker punched and kicked the two men after the younger man asked the assailant to stop smoking on the platform — and eventually, shoved the 73-year-old onto the tracks, police and sources said.

Thankfully, she was not hit by the train and was expected to recover after being taken by EMS to New York-Presbyterian Brooklyn Methodist Hospital, according to police.

Cops are still hunting for the attacker.