| Age | 59 |
| Birthday | 24 December, 1964 |
| Birthplace | Ogdensburg, New York, USA |
| Height | 5' 11" (180 cm) |
| Eye Color | Blue |
| Hair Color | Brown - Light |
| Zodiac Sign | Capricorn |
| Nationality | American |
| Occupation | Actor |
| Claim to Fame | Brad Chase on Boston Legal |
Mark Thomas Valley (born December 24, 1964) is an American film and television actor, best known for his roles as Brad Chase in the TV drama Boston Legal, Oliver Richard in the NBC drama Harry's Law, FBI Special Agent John Scott in the Fox sci fi series Fringe, Christopher Chance in Fox's action drama Human Target, and Tommy Sullivan in ABC’s Body of Proof.
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