Marc-Donald Fenelus (or Marco; born 22 August 1992) is a Turks & Caicos Islands international footballer who last played for Taiwan Football Premier League club Taiwan Steel.
Fenelus played college soccer at Western Texas College in 2011 and 2012, before transferring to Cal State Fullerton for 2013 and 2014.
On 15 January 2015 Fenelus was selected in the third round (47th overall) in the 2015 MLS SuperDraft by New England Revolution.
Fenelus joined Taiwanese Intercity Football League side Tatung in September 2015.
In April 2020, it was revealed that Fenelus had joined Taiwan Steel.
Fenelus made his debut for Turks and Caicos in a July 2011 World Cup qualification match against the Bahamas. He has represented his country in World Cup qualification games and at the 2014 Caribbean Cup.
Beginning in 2016, Fenelus managed Provo Premier League club , alongside fellow Turks and Caicos international James Rene.