James Russell Mercer (born December 26, 1970) is an American singer-songwriter and musician. He is the founder, vocalist, lead songwriter, and sole remaining original member of the indie rock group The Shins.

In 2009, Mercer and producer Danger Mouse formed the side project Broken Bells, for which they released a self-titled album in March 2010, followed by After the Disco in 2014, and then Into the Blue in 2022.

He also has acted, appearing in Matt McCormick's feature film Some Days Are Better Than Others, which premiered in 2010.