Ross County have released defenders Uros Celcer, Tim Dreesen and Jordi Balk, while Jim Fenlon has also been told he can leave.
The quartet have only been with the Staggies since the summer, having been signed by previous manager Derek Adams.
However, they have all found their opportunities limited since Jim McIntyre took charge at Victoria Park in September.
McIntyre said: “I would like to thank the players for their professional attitude and wish them well for the future.”
Belgian defender Dreesen, 27, was previously transferred for £1.3 million when he joined Club Brugge from Lierse in 2006, while 25 year-old Celcer joined County from Serie A side Parma.
Balk, 20, came through the youth ranks at FC Utrecht, with right back Fenlon, also 20, joining from AFC Wimbledon in the summer.
Meanwhile, McIntyre confirmed captain Richard Brittain has agreed to postpone a foot operation which was due in the current international break, while fellow midfielder Terry Dunfield has returned to training following a groin injury.
