Marion Grice (born April 10, 1991) is a Canadian football running back for the Edmonton Eskimos of the Canadian Football League (CFL). He was drafted by the San Diego Chargers in the sixth round of the 2014 NFL Draft. He played college football at Arizona State.
Grice attended Blinn Community College for two years. He totaled 2,221 rushing yards and 33 touchdowns over two junior college seasons at Blinn, and was named as a Second-Team NJCAA All-American as a sophomore in 2011 after carrying 174 times for 1,052 yards with 16 rushing touchdowns. Rated as a four-star recruit by Rivals.com , he was listed as the No. 5 overall junior college prospect in the country. 
Grice compiled a total of 39 total touchdowns, which is good for 5th in school history despite playing in only 24 games while at Arizona State University. In 2012, while working his way as the starter, he led the team in rushing yards with 679 yards on 103 rushes (6.6 avg) and had 11 touchdowns. He also added 41 receptions for 425 yards and eight touchdowns. He finished his season recording 159 yards on 14 rushes and two touchdowns, being named MVP of the 2012 Kraft Fight Hunger Bowl.  In 2013, he rushed for 996 yards on 191 rushes (5.2 avg) and 14 touchdowns, and also caught 50 passes for 438 yards and six touchdowns. All while missing the last 3 games of the season.Grice finished 3rd in the country in all purpose yds/game (176.45) and 5th in the country in scoring per game (10.9). He earned second-team All- Pac-12 honors. 
San Diego Chargers
Grice was selected by the San Diego Chargers with the 201st overall pick in the sixth round of the 2014 NFL Draft.  He was released on September 1, 2014 but was signed to their practice squad on September 2, 2014.
On September 22, 2014, the Arizona Cardinals signed Grice off the Chargers' practice squad.  Marion played in his first regular season NFL game October 26, 2014 against the Philadelphia Eagles. He recorded his first touchdown, a 1-yard rush in the fourth quarter of the Cardinals win over the Dallas Cowboys on November 2.  He scored a touchdown run in the Cardinals' game in the playoffs on January 3, 2015, against the Carolina Panthers. On September 5, 2015, he was waived/injured by the Cardinals.  On the following day, he cleared waivers and was reverted to the Cardinals' injured reserve list. On September 8, 2015, Grice was released by the Cardinals with an injury settlement.
Arizona Cardinals (II)
Grice signed with the Ottawa Redblacks of the Canadian Football League (CFL) in November 2016, following the conclusion of the 2016 CFL season. He was released by the Redblacks on May 28, 2017 at the start of training camp.