Kilmarnock will not be renewing the contracts of forward Allan Johnston or the defensive pair of David Lilley and Grant Murray.
Former Scotland international Johnstone has reached the end of a two-year deal, while Lilley turned down the offer of a contract extension.
Murray, 33, has also reached the end of a two-year deal.
Meanwhile, captain Gary Locke is considering the offer of a coaching role at Rugby Park.
Kilmarnock have also advanced other player contract negotiations for next season and have no plans to reduce the first-team squad budget in preparation for next season.
The Ayrshire club increased their player budget over the past three seasons to £2m, but do not intend to increase expenditure on transfer fees, wages and agent costs.
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