Matthew John Breida (born February 28, 1995) is an American professional football running back.

Breida's adoptive parents moved the family from Hudson, Florida, to Spring Hill north of Tampa.

As a junior in 2015, Breida improved to 1,609 yards (second in the conference to Larry Rose III[7]) and a conference-leading 17 touchdowns on 203 carries.

[23] Breida entered the season expecting to back up newly signed free agent Jerick McKinnon, but McKinnon tore his ACL prior to the start of the season, thrusting Breida to compete for the starting role with Alfred Morris.

Breida began the season as backup to Morris, but out-gained the veteran with 46 yards in the season-opening 24–16 road loss to the Minnesota Vikings.

[28] Frequently hampered by minor injuries,[29][30] Breida split carries with veterans Morris and Raheem Mostert.

[31] Breida rebounded with a 17-carry, 101-yard performance in a Week 10 27–23 loss to the Giants,[25] and in his Week 12 return to the Tampa area, Breida recorded 106 yards on 14 rushes to move back to second in the NFL (behind Green Bay's Aaron Jones) with 5.8 yards-per-carry, and added 34 receiving yards.

[34] During a Week 16 14–9 loss to the Chicago Bears, Breida had just four carries for 20 yards before again suffering an ankle injury, which placed him on injured reserve for the rest of the season.

[38] With continued complications in McKinnon's recovery, Breida entered the season as a co-starter with free agent acquisition Tevin Coleman.

[45] On April 25, 2020, during the 2020 NFL draft, Breida was traded to the Miami Dolphins for a fifth-round pick, which the 49ers used to select West Virginia offensive lineman Colton McKivitz.

[50][51] Sparingly used due to the presence of running backs Zack Moss and Devin Singletary, Breida scored his first touchdowns with the Bills in Week 10 against the New York Jets.

[55] Being used as the backup to Saquon Barkley, Breida scored his first and his only touchdown of the regular season during a Week 10 31–18 loss to the Detroit Lions.

[62][3] During his time at Georgia Southern, Breida volunteered as a reader and speaker at elementary schools in two states, which contributed to his nomination as a Senior Class Award finalist and Honor Roll member.