Nels Courtney Cline (born January 4, 1956 in Los Angeles) is an American guitarist and composer. He has been the guitarist for the band Wilco since 2004.
He first came to prominence in the 1980s playing jazz, often in collaboration with his twin brother Alex Cline, a drummer. Since then, he has worked with a wide range of musicians in punk and alternative rock, notably Mike Watt and Thurston Moore. He also leads the groups the Nels Cline Singers and Nels Cline Trio.
Cline was named the 82nd greatest guitarist of all time by Rolling Stone magazine in November 2011,.