UHK management implemented the restrictions with immediate effect on Monday evening.
University Hospital Kerry has reimplemented visiting restrictions after a "significantly increased number" of covid-19 cases and emergency presentations.
The hospital's management reimplemented the restrictions on Monday evening.
"Our priority is to keep you and your loved ones safe, thus University Hospital Kerry has taken the decision to put in place measures to ensure that visiting takes place on as safe a basis as is possible," a spokesperson for the hospital said.
UHK management said mask wearing and full hand hygiene now applies to all visitors.
Non-covid positive patients on general hospital wards will be limited to one visit per patient per day, with timings to be agreed with the visiting co-ordinator.
Visitations outside designated times will be permitted only on compassionate grounds, the hospital said.
On maternity wards, accompanying partner arrangements remain unchanged.

Families Face Delays Arranging Funerals Amid Pressure On Post-Mortem Services
Media Minister Says Meeting With RTÉ Was "Positive" Amid €20M Funding Cut
Man (51) Accused Of Healy-Rae Assault Granted High Court Bail
Nurses At Naas And Nine Other Hospitals Set To Protest Over Pay
Minister Lawless Announces €34M Student Support Package For Budget 2027
Kildare Minister Says Budget 2027 Will Support Those "Who Are Vulnerable"
Dáil Passes Tax Measures Despite Widespread Criticism
LIVE: Budget 2027 Announcements