Under Reid, who has been coach since 1999, the Eagles have had a record of 56-33, reaching the conference championship game the past three years.
Since 2000, no other NFL head coach has more than Reid's 46 regular season wins, and his winning percentage (.629) and five playoff wins are more than any coach in team history.
"As I've said many times, Andy Reid is an excellent leader of our football team," owner Jeffrey Lurie said on the team's Web site.
"I think he is outstanding in every capacity. As a coach, as a person, as a leader, as somebody who makes cool decisions and who is willing to make the unpopular decision, which to me is absolutely crucial if you want to win big."