{{Wiktionary|phd|PhD|Ph.D.}}
'''PHD''', '''PhD''', or '''Ph.D.''' may refer to:
<!--Keep at top--> * Doctor of Philosophy (PhD), an academic qualification
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==Comics== * ''PhD: Phantasy Degree'', a Korean comic series * ''Piled Higher and Deeper'' or ''PhD Comics'', a webcomic
==Music== * 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
==Other uses== * PHD finger, a protein sequence * Harry Clever Field (IATA and FAA LID: PHD), a US airport
==See also== * EGLN2 or PHD1, an enzyme * EGLN1 or PHD2, an enzyme * EGLN3 or PHD3, an enzyme * Naval Surface Warfare Center Port Hueneme (NSWC PHD), California, US
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