Austin Lance Adams (born May 5, 1991) is an American professional baseball pitcher in the Boston Red Sox organization.

He has previously played in Major League Baseball (MLB) for the Washington Nationals, Seattle Mariners, San Diego Padres, Arizona Diamondbacks, and Oakland Athletics.

[6] With the Nationals' bullpen struggling over the first half of the 2017 season, Adams was mentioned by The Washington Post in a July 12 article among several minor league pitchers the team could consider calling upon as reinforcements.

[7] Two days later, Adams was called up to the big leagues for the first time, along with Syracuse teammate Trevor Gott, after the Nationals optioned struggling left-handed reliever Sammy Solis and assigned ailing starter Joe Ross to the disabled list with an elbow sprain.

[14] Martinez intended Adams to face right-handed utility player Chris Owings, who was waiting in the on-deck circle.

On May 4, 2019, the Nationals traded Adams to the Seattle Mariners for left-handed minor-league pitcher Nick Wells and cash considerations.

On August 30, 2020, the Mariners traded Adams, Austin Nola, and Dan Altavilla to the San Diego Padres for Ty France, Taylor Trammell, Andrés Muñoz, and Luis Torrens.

[21] On April 28, Adams was placed on the 60-day injured list after receiving a platelet-rich plasma injection for a strained right forearm.

[23] On November 10, Adams was removed from the 40-man roster and sent outright to the Triple–A El Paso Chihuahuas; he elected free agency the same day.

[25] He was assigned to the Triple-A Reno Aces to begin the year, where he made 12 appearances and recorded a 2.84 ERA with 20 strikeouts and 3 saves in 12+2⁄3 innings pitched.

On August 1, Adams was pulled from an appearance against the San Francisco Giants after he was struck in the right ankle by a Joc Pederson comebacker.

[29] Following the season on November 6, Adams was removed from the 40–man roster and sent outright to Triple–A Reno; he subsequently elected free agency the same day.

Despite an effective two-pitch mix, Adams has been noted for problems with his command,[38] walking more than seven batters per nine innings in the first half of the 2017 season with the Class-AAA Syracuse Chiefs.