Douglas John Ardito (born 10 March 1971) plays guitar and bass guitar for the band Puddle of Mudd. He is a Fender Musical Instruments endorsed artist.
Ardito co-wrote Puddle of Mudd's biggest single, "Blurry". Guitar One Magazine voted Ardito's harmonic guitar part in "Blurry" as one of the "Top Ten Riffs of the Decade". The song reached the #1 spot on the Hot Mainstream Rock Tracks and Modern Rock Tracks charts for ten and nine weeks. This soon propelled the single to mainstream success, reaching the #5 spot on the Billboard Hot 100 Airplay chart. Ardito along with the other two authors of the song won ASCAP's Song of the Year and Pop Song of the Year. "Blurry" also won two Billboard awards in 2002, for "modern rock track of the year" and "rock track of the year". It also won the Kerrang award for Best Single. Blurry reached #8 in the UK Singles Chart, becoming the band's highest charting single in the United Kingdom.