I don't believe there are any first names with that meaning, since priesthood is sacred and more of a title in Jewish culture, which would make it inappropriate as a name. At least in the past.
However, you can use any term for a priest as a name, technically.
For example, Gabbai and Chazzan are terms for priests.
Aliyah - a person who is chosen to read a blessing from the Torah, has a role in the service but is not an actual priest. This also happens to be a first name for females, and a current Jewish word.
I am not sure what you need the name for, but
Cohen is probably the most mainstream word that doubles as a surname and given name. However, it would be mildly offensive to give the name to a Jewish baby.
Ancient Jewish culture ascribes great meaning to names, that usually reflect a wish for the child or a retelling of the parents experiences, or even a revelation. Never a title though.
Hope that helps!
______________________________________________
"How wonderful it is that no one need wait a single moment before starting to improve upon the world." -Ann FrankMama to my "bright star"
Clarisse Bituin and Wife to
Julius.
Mahal na mahal from our little family to yours!