Quinn took over from Kevin Bond as Bournemouth boss in September
Bournemouth have parted company with manager Jimmy Quinn following a board meeting on New Year's Eve.
The 49-year-old took over from Kevin Bond at the start of September and was in charge for just 121 days.
The Cherries are second from bottom of Coca-Cola League Two, seven points from safety after starting the season on minus 17 points.
Eddie Howe is now the caretaker manager and will take charge of the team for the match with Darlington on Saturday.
"AFC Bournemouth have today parted company with manager Jimmy Quinn," said a club statement. "The move follows a board meeting held this evening with the new board.
"The club would like to take this opportunity to thank Jimmy for his efforts over the last four months and wishes him every success in the future."
The club say there will be a press conference on 2 January "where the new board will update the media on the current situation".