The nominations were announced Thursday for the fan-voted American Music Awards, with an all-male lineup for the top prize of artist of the year.
Mars will compete against The Chainsmokers, Drake, Lamar and Sheeran.
Justin Bieber, Daddy Yankee and Luis Fonsi received four nominations each, including favorite pop/rock song for their hit collaboration, “Despacito.” The video for “Despacito,” which set the record for most-watched clip on YouTube with more than 3 billion views, was also nominated for video of the year.
Keith Urban leads country artists with three nominations. Nominees for the new artist of the year are James Arthur, Niall Horan, Julia Michaels, Post Malone and Rae Sremmurd.
Alessia Cara, Lady Gaga and Rihanna are nominated for favorite female artist pop/rock.
The show will air live from the Microsoft Theater in Los Angeles on Nov. 19 at 8 p.m. Eastern on ABC.