Rashaan DeMarcus Melvin (born October 2, 1989) is an American former professional football cornerback and current assistant secondary coach for the Nebraska Cornhuskers.

At the conclusion of the pre-draft process, Melvin was projected to be a seventh round pick or an undrafted free agent by NFL draft experts and scouts.

[4] Throughout training camp, Melvin competed for a roster spot as a backup cornerback against Anthony Gaitor, Danny Gorrer, Myron Lewis, Branden Smith, and Deveron Carr.

Head coach Greg Schiano named Melvin the fourth cornerback on the depth chart to start the regular season, behind Darrelle Revis, Leonard Johnson, and Johnthan Banks.

[8] On December 30, 2013, the Tampa Bay Buccaneers fired head coach Greg Schiano and general manager Mark Dominik after they finished with a 4–12 record in 2013.

[10] Head coach Lovie Smith named Melvin the fifth cornerback on the depth chart to begin the regular season, behind Alterraun Verner, Mike Jenkins, Leonard Johnson, and Johnthan Banks.

[13] On November 8, 2014, the Baltimore Ravens signed Melvin from the Dolphins' practice squad and added him to their active roster after cornerbacks Jimmy Smith, Danny Gorrer, Aaron Ross, and Tramain Jacobs were all placed on injured reserve.

[14][15] On December 14, 2014, Melvin made his professional regular season debut and recorded five combined tackles and deflected a pass during a 20–12 victory against the Jacksonville Jaguars in Week 15.

[20] During training camp, Melvin competed for a roster spot as a backup cornerback against Tramain Jacobs, Anthony Levine, Chris Greenwood, Tray Walker, and Cassius Vaughn.

Head coach John Harbaugh named Melvin the fourth cornerback on the depth chart to start the season, behind Jimmy Smith, Lardarius Webb, and Kyle Arrington.

On September 27, 2015, Melvin made one tackle before being benched in the second quarter after being penalized twice and giving up a 16-yard touchdown reception to wide receiver Marvin Jones during a 28–24 loss to the Cincinnati Bengals.

On October 13, 2015, the Baltimore Ravens waived Melvin after promoting cornerbacks Asa Jackson and Charles James from the practice squad and signing free agent Shareece Wright.

[24] Head coach Bill Belichick named Melvin the fifth cornerback on the depth chart upon arriving on the roster, behind Logan Ryan, Malcolm Butler, Justin Coleman, and Brandon King.

[29] Melvin competed for a roster spot as a backup cornerback during training camp against Tony Lippett, Jordan Lucas, Tyler Patmon, Lafayette Pitts, and Chimdi Chewka.

[32][33] Head coach Chuck Pagano named Melvin the sixth cornerback on the Colts' depth chart to start the regular season, behind Vontae Davis, Patrick Robinson, Darius Butler, Antonio Cromartie, and Darryl Morris.

[35] On December 13, 2016, defensive coordinator Ted Monachino officially named Melvin a starting cornerback for the remainder of the season after Patrick Robinson sustained a groin injury and was placed on injured reserve.

Melvin made his first career interception off a pass by Browns' quarterback DeShone Kizer, that was originally intended for wide receiver Kasen Williams, and returned it for a seven-yard gain in the third quarter.