Almario Vernard Chalmers (born May 19, 1986) is an American professional basketball player who last played for the Zamboanga Valientes of the Asian Tournament (TAT).

He was selected as the 34th overall pick in the 2008 NBA draft by the Minnesota Timberwolves after playing three seasons of college basketball for the University of Kansas.

Mario is the son of Ronnie and Almarie Chalmers, parents who have each played active roles in developing basketball players.

[6] Chalmers considered Arizona, North Carolina, Wake Forest and Georgia Tech before finally committing to the University of Kansas on May 21, 2004.

Chalmers began his college career on the bench behind guard Jeff Hawkins, but worked his way into the starting rotation in January 2006.

In the Big 12 Coaches Awards, Chalmers was named Co-Defensive Player of the Year with Marcus Dove of Oklahoma State.

He scored 30 points in Kansas' win in the Big 12 Conference tournament title game against Texas.

[8] Chalmers helped his team win the 2008 NCAA Championship with a three-point shot with 2.1 seconds left in the final game.

His three just before the end of regulation brought the game into overtime, where Kansas took over and defeated the Memphis Tigers, led by phenom freshman Derrick Rose.

In April 2008, Chalmers declared for the NBA draft, forgoing his final year of college eligibility.

[1] On September 3, 2008, Chalmers and fellow former Kansas Jayhawks teammate Darrell Arthur were excused from the NBA's rookie transition program.

Fellow NBA rookie Michael Beasley was not asked to leave the camp, but was later fined $50,000 for his involvement in the incident.

[16] In Game 5 of the 2011 NBA Finals, Chalmers made a half-court shot at the buzzer of the first quarter to give the Heat a 31–30 lead.

On June 15, 2011, the Heat extended a qualifying offer to Chalmers, making him a restricted free agent in the offseason.

[24] On June 9, 2013, during Game 2 of the NBA Finals against the San Antonio Spurs, Chalmers led all scorers with 19 points as the Heat tied the series 1–1 with a 103–84 victory.

He won his second championship on June 20, as the Heat defeated the Spurs to conclude an intense seven-game series.

The Heat faced the San Antonio Spurs again, but unlike past Finals series, Chalmers struggled and was replaced in the starting lineup by Ray Allen in Game 5.

[27] On November 10, 2015, Chalmers was traded, along with James Ennis, to the Memphis Grizzlies in exchange for Jarnell Stokes and Beno Udrih.

[28] He made his debut for the Grizzlies three days later, scoring 11 points off the bench in a 101–100 win over the Portland Trail Blazers.

[30] On March 10, 2016, he was ruled out for the rest of the season after rupturing his right Achilles tendon in Memphis' 116–96 loss to the Boston Celtics the previous night.

[36] On September 21, 2020, Chalmers signed a one-year contract with Aris Thessaloniki of the Greek Basket League.

[39] On December 31, 2021, Chalmers returned to the Miami Heat on a 10-day contract via the hardship exemption after the team placed 5 players in the NBA health and safety protocols.