On July 31, 2014, the Twins traded Fuld to the Oakland Athletics for pitcher Tommy Milone.
On September 30, in the Athletics' wildcard game against the Kansas City Royals, Fuld reached base three times.

In the 2014 season, Fuld batted .239 in 113 games overall.
 He stole 21 bases in 25 attempts, with his 84% percentage tying for the ninth-best percentage in the American League.
He stole third base six times, tying for seventh in the AL.
His five assists from center field, where he started 58 games, tied him for fifth among AL center fielders, and his career-high 11 total assists tied him for seventh among AL outfielders.

In 2015, in a career-high 120 games Fuld batted .197 for the A's, playing primarily center field and left field.
He led the league in double plays turned from left field, with three.
His seven assists from left field, where he started 23 games, tied him for fourth among AL left fielders.

In 2016, Fuld suffered a left shoulder rotator cuff injury that necessitated surgery, after he batted .417 in spring training for the A's.
He was put on the disabled list, and did not play in the regular season.
He retired in November 2017.
On July 31, 2014, the Twins traded Fuld to the Oakland Athletics for pitcher Tommy Milone. On September 30, in the Athletics' wildcard game against the Kansas City Royals, Fuld reached base three times.
In the 2014 season, Fuld batted .239 in 113 games overall.  He stole 21 bases in 25 attempts, with his 84% percentage tying for the ninth-best percentage in the American League. He stole third base six times, tying for seventh in the AL. His five assists from center field, where he started 58 games, tied him for fifth among AL center fielders, and his career-high 11 total assists tied him for seventh among AL outfielders.
In 2015, in a career-high 120 games Fuld batted .197 for the A's, playing primarily center field and left field. He led the league in double plays turned from left field, with three. His seven assists from left field, where he started 23 games, tied him for fourth among AL left fielders.
In 2016, Fuld suffered a left shoulder rotator cuff injury that necessitated surgery, after he batted .417 in spring training for the A's. He was put on the disabled list, and did not play in the regular season. He retired in November 2017.
Sam Fuld