Frank "Poncho" Sampedro is an American guitarist and a former member of the rock band Crazy Horse. He is known mainly for his longtime collaboration with singer-songwriter Neil Young. Sampedro has played and recorded with Young in many other configurations aside from Crazy Horse and earned co-writing credits on several Young songs. Out of all Young's musical collaborators, Sampedro has perhaps proven the most adept at working with the mercurial artist.