Dr John Sentamu says prayers are said for Claudia Lawrence every day at Bishopthorpe Chapel.
He's been tweeting his support for the campaign to find her as her churchgoing father marks 2,000 days since the 35 year old disappeared.
The chef was last seen leaving work at York University in March 2009.
Her father, Peter, said: "It's more than frustrating.
"It's very difficult to live with because every day you're wondering what on earth happened.
"For 2,000 days I've been trying to get people to imagine how long that is...it's so difficult to imagine it going on that long."
Two men have been arrested and bailed in the last few months by police investigating her disappearance but they still don't know what happened to Claudia.
Peter is renewing his call for anyone who has any information relating to her disappearance to come forward.
You can contact the Missing Person's helpline on 116 000.
Hear more from Peter talking about the importance of prayer in this situation:
A Monthly Gift Of $11 Makes A World Of Difference
In a world of fake news there’s never been a greater need for quality Christian journalism. Premier’s mission is to provide the Church with the most up to date and relevant news, told from a Christian perspective. But we can’t do it without you.
Unlike many websites we haven't put up a paywall — we want to keep our journalism free at the point of need and as open as we can. Premier’s news output takes a lot of time, money and hard work to produce. No one in the USA is sharing news like we are across radio, magazines and online so please help us to continue that today.
For a monthly gift of $11 or more we’d also be able to send you a free copy of the brand new Premier Bible, a wonderful Anglicised version of the NLT packed with exclusive bonus content, reading plan and resources to help you get the most out of scripture.
Your monthly support will make a world of difference. Thank you.