PHD or PhD may refer to: Doctor of Philosophy (PhD), an academic qualification Entertainment PhD: Phantasy Degree, a Korean comic series Piled Higher and Deeper, a web comic Ph.D. (band), a 1980s British group Ph.D. (Ph.D. album) Ph.D. (Art Farmer album) "PHD", a song on the album Tweekend by the Crystal Method Science and technology PHD finger, a protein sequence Enzymes PHD1, PHD2 and PHD3 Locations Naval Surface Warfare Center, Port Hueneme Division, Port Hueneme, California Harry Clever Field, a small, public general aviation airport in New Philadelphia, Ohio