Mountmellick, is a parish in County Laois within the Diocese of Kildare and Leighlin.

As of 2023, parish priest is Mícheál Murphy.

The parish is served by two churches: St. Joseph's Church in Mountmellick and St. Mary's Church in Clonaghadoo.

The main church is the St. Joseph's Church in Mountmellick. Building of this church started in 1864, to be completed in 1878. In 1912 the bell-tower was added. The church was originally a rectangle until an extension in 1965 changed it in a cruciform shape.

The second church in the parish is the St. Mary's Church in Clonaghadoo. This church was built in 1970 and replaced an older chapel a short distance away.

• Patrick Lennon, parish priest and later bishop of Kildare and Leighlin

• 
  St. Joseph's Church, Mountmellick
• 
  St. Mary's Church, Clonaghadoo

There are 3 GAA clubs in Mountmellick Parish.

Mountmellick - Dual Hurling and Football

The Rock - Football only

Kilcavan - Football

As Mountmellick is the only hurling club in the Parish players from Kilcavan and The Rock who wish to play hurling play with Mountmellick.