Alexander Ovechkin has proven he’s “The Greatest One” … at least at goal scoring that is — ’cause he just passed Wayne Gretzky for the most goals scored in NHL history.

The Washington Capitals star broke the record mere moments ago in Long Island, New York … scoring a second period goal against the Islanders.

Check out the clip … Ovi slaps the puck right by All-Star goalie Ilya Sorokin for number 895 — and the crowd goes wild jumping and screaming while Ovechkin slides on his belly across the ice like a penguin in celebration.

Alexander’s teammates surround him on the ice … and, the whole game stopped to honor the achievement.

Ovechkin gave a short speech thanking his family, friends and countryman Sorokin too … while ESPN also shared messages of congratulations from huge stars like Derek Jeter, Simone Biles and a fellow all-time scoring leader, LeBron James.

Gretzky was on hand to watch the achievement … looking overjoyed when his record was finally broken before coming down to the ice and shaking Ovi’s hand.

It’s a big accomplishment for Ovechkin, who is playing in his 1,487th game Sunday … the exact same number of games Gretzky played in his career, BTW.

Don’t worry about Gretzky too much though … he’s still the all-time NHL leader in points and assists, and holds numerous other records