| First Name | Declan |
| Middle Name | Joseph Oliver |
| Last Name | Donnelly |
| Full Name at Birth | Declan Joseph Oliver Donnelly |
| Other Names | DecDuncan |
| Age | 36 |
| Date of Birth | September 25, 1975 |
| Birthplace | Newcastle Upon Tyne, England |
| Height | 5' 6" (168 cm) |
| Eye Color | Blue |
| Hair Color | Brown - Light |
| Star Sign | Libra |
| Religion | Roman Catholic |
| Ethnicity | White |
| Nationality | English |
| Occupation Category | TV Personality |
Declan Joseph Oliver "Dec" Donnelly (born 25 September 1975) is one half of the English acting and TV presenting duo Ant & Dec, with the other being Anthony McPartlin. He came to prominence in the children's drama series Byker Grove and as one half of the pop music duo PJ & Duncan. Since then, Ant & Dec have had a very successful career as TV presenters, presenting programmes such as SMTV Live, Friends Like These, Pop Idol, Britain's Got Talent, I'm a Celebrity... Get Me Out of Here!, Ant & Dec's Saturday Night Takeaway, PokerFace and Push the Button. They have also returned to acting, starring in a 2002 Tribute to The Likely Lads and the 2006 film Alien Autopsy.
Selected Declan Donnelly film and TV show credits: