Marshawn Lynch wasn't the only one caught on TV droppin' F-bombs this week ... 'cause broadcast mics picked up an NHL player's "F*** you!" during a game Wednesday -- and it was LOUD.
The cussing was captured during the first period of the Philadelphia Flyers' tilt with the Edmonton Oilers ... and it could be heard crystal clear on television.
No word yet on who unleashed the profane remark ... but it appeared to happen because of an on-ice collision between a Flyers player and an Oilers player.