Noël can be a girl or a boy's name. My middle name was named after a girl named Noël, and I truly just can't see it as a boy's name. Maybe if you pronounce it nole, maybe.
― Anonymous User 12/10/2015
3
While Noel is exclusively masculine in French, it is unisex in English. As a female name, it's probably best known (at the moment) for being Kim Kardashian's middle name.
Noël is pretty much always pronounced no-EL, while Noel can be pronounced as no-EL or NOLE. This name was relatively popular in France in the late 40's and early 50's.
I believe this spelling is used for both male and female children; the pronunciation [nol] is typically used for males and the [no-EL] pronunciation for girls. Without the two dots over the E the name would be pronounced [nol]. Other variants of spelling (for female usage, typically) include Noelle, Noell, Noele, etc. (The first is most common, I believe.)
Sources: https://en.m.wikipedia.org/wiki/Noel_(given_name)
https://en.m.wikipedia.org/wiki/Noël_(singer)
https://en.m.wikipedia.org/wiki/Noël_Coward
https://en.m.wikipedia.org/wiki/Noël_Godin
https://en.m.wikipedia.org/wiki/Noël_Leslie,_Countess_of_Rothes
https://en.m.wikipedia.org/wiki/Noël_Martin
https://en.m.wikipedia.org/wiki/Noël_Wells
https://forebears.io/forenames/noël
https://www.gpeters.com/names/baby-names.php?name=Noël