Cuan Mhuire (pronounced [ˌkuən̪ˠ ˈwɪɾʲə]; Irish for "Mary's Harbour") is a charitable drug, alcohol and gambling rehabilitation organisation in Ireland.

Cuan Mhuire provides a residential programme to persons suffering from alcohol, other chemical dependencies and gambling.

It was founded by Sr. Consilio Fitzgerald a member of the Sisters of Mercy in 1966 and has rehabilitation centres and other facilities, dealing with approximately 2500 people each year.

[citation needed] In 1965 Consilio convinced the nuns in Athy to convert the dairy of the convent into a 'drop in' centre, where she could greet her visitors and listen to their troubles.

The bank manager later discovered that Consilio had paid off the purchase price in full, and he had not to worry about honouring the big cheque.