Ian Williams (b. 1970, Johnstown, Pennsylvania) is a rock guitarist. He is most well known for his unique approach to finger tapping on guitar and utilizing two Akai Headrush guitar pedals. His distinctive style allows him to achieve unusual textures on the guitar. His propensity towards guitar tapping allows him to accompany himself on keyboard at live performances, using one hand for each instrument. Ian is best known for his guitar work in math rock pioneers Don Caballero, but has also played guitar in the avant garde band Storm & Stress, and is currently a member of Battles.