The Faculty has a chapel in the basement that is always open for use.
There are scheduled services and hours of prayer every week, normally held in Norwegian
cf. the Norwegian web page about the Chapel.
On Thursdays there is service with Communion from 11 o'clock. This mass lasts for about a half an hour.
Students from the Theology program arrange morning prayers certain days from 10 a.m.
The list of services and prayer is available outside the chapel, and at cf. https://www.tf.uio.no/livet-rundt-studiene/kapellet/index.html.