Niall Campbell won the first £20,000 Edwin Morgan Poetry Award for Moontide, published by Bloodaxe this year, and was given the prize at the Edinburgh International Book Festival.
Born on South Uist in 1984, Campbell is also in the running for the Forward Prize for best first collection for the book.
The runner-up was Claire Askew for her unpublished collection This Changes Things.
The award is for Scottish poets aged 30 or under.
The judges of the award were poets Stewart Conn and Jen Hadfield.
Conn said of Campbell's book: "These poems, with their rich textures, succulent descriptions and seductive cadences reveal a gifted wordsmith. They transform the Uist they celebrate."
Ms Hadfield added: "In lightly framing the unsaid, some of these poems have a haunted quality."
The other shortlisted poets, who each receive £1000, are: Tom Chivers, Harry Giles, Stewart Sanderson, and Molly Vogel.