[1]: 144 [2] Its ultimate origin, as with John, is from the Hebrew Yohanan (יוֹחָנָן‎),[a] "Graced by Yah", or Yehohanan (יְהוֹחָנָן‎), "Yahweh is Gracious".

[1]: 356 In Catalan-Valencian and Occitan, Joan (pronounced [(d)ʒuˈan]) has been in continuous use as the native, masculine form of John since at least the Middle Ages.

Historically, Joan and Joam were also the main forms of John in medieval Portuguese (or Galician-Portuguese).

They are divided by gender and time period and within each list are presented alphabetically, by surname or title.

Where the same name or title applies to more than one entry, each of the sub-entries for the group is listed in order of birth year.