The two Brits lead the way in the category, which will see
Sam's hits "Stay With Me" and Disclosure collaboration "Latch" compete against Ed Sheeran's "Sing" and "Don't", reported Billboard magazine.
Other songs up for the coveted prize include Clean Bandit's "Rather Be", Rixton's "Me and My Broken Heart", Coldplay's "Sky Full Of Stars", Nico & Vinz's "Am I Wrong", Tove Lo's "Habits (Stay High)" and Iggy Azalea's collaboration with Charli XCX, "Fancy".
Sheeran was previously nominated in 2014 for his work on Taylor Swift's "Everything Has Changed" but was pipped to the post by Daft Punk's chart topping hit "Get Lucky".
More From This Section
Previous winners include Adele who won in 2012 for "Rolling In The Deep", while 2013's winners were Swedish writing duo Jorgen Elofsson and Ali Tamposi who penned Kelly Clarkson's "Stronger (What Doesn't Kill You)".
The gala ceremony will also honour
internationally-celebrated songwriter Graham Gouldman as a BMI Icon, having created hits for a string of artists including The Yardbirds and The Hollies.