Fears were growing for Princess Masuta who was last seen standing outside St Andrew’s Church in Milton Keynes at about 11am.
The appeal to find her, which was published on Facebook, was shared by more than 1,700 people.
One well-wisher, Louise Kwame, said: “Shared. I hope this pretty little lady is found safe and well soon.”
However, on Sunday evening, Thames Valley Police thanked the general public for their assistance during the search and confirmed that Princess had been located.
A statement read: “Good news – a girl missing from Bletchley has been found safe and well.
“Princess Masuta, aged 11, who was missing since this morning has been located tonight.
“Thank you for sharing the appeal to help to find her.”
An 11-year-old girl, who went missing from a church on Sunday, has been found “safe and well”.