Aubrey "Po" Powell (born 23 September 1946) is a British graphic designer. He co-founded the album cover design company Hipgnosis with Storm Thorgerson in 1967. The company ran for 15 years until 1982, and created some of the most acclaimed record cover art of the 1960s, 1970s and 1980s for many of the most famous rock bands of the era including Pink Floyd, Led Zeppelin, Paul McCartney, Yes, Genesis, 10cc, Wishbone Ash, Peter Gabriel, UFO, Bad Company, Emerson, Lake & Palmer, Scorpions, Styx, Syd Barrett, and Black Sabbath. The company was nominated five times for Grammy Awards.