Middle names for Rex
Good middle names for Rex change the rhythm, start with a different sound and end differently, so the full name doesn't blur or rhyme. Rex has 1 syllable and ranked #859 for boys in 2025; these boy names, all well established in US records, fit those rules.
2-syllable middle names
Rex has 1 syllable; a 2-syllable middle name gives a contrasting rhythm.
- Rex Liam Irish short form of William
- Rex Noah rest (Hebrew noaḥ)
- Rex Henry home + ruler (Germanic)
- Rex William will + helmet (Germanic)
- Rex Lucas 'man from Lucania' (via Luke)
- Rex Levi
- Rex Daniel 'God is my judge'
- Rex Michael 'who is like God?'
- Rex Ethan firm, enduring
- Rex Ezra help
- Rex Asher happy, fortunate
- Rex Leo lion
3-syllable middle names
A longer or shorter middle name also keeps the full name from sounding sing-song.
- Rex Oliver
- Rex Elijah 'my God is Yahweh'
- Rex Theodore gift of God
- Rex Mateo 'gift of Yahweh' (via Matthew)
- Rex Benjamin
- Rex Julian of Julius (Roman family name)
- Rex Elias 'my God is Yahweh' (via Elijah)
- Rex Gabriel 'God is my strength / man of God'
- Rex Maverick
- Rex Anthony
- Rex Josiah healed or supported by God
- Rex Isaiah God is salvation
Classic and vintage middle names
Names that have lasted (timeless) or are coming back after a century (vintage revival), by our measured style lists.
- Rex Anthony
- Rex Henry home + ruler (Germanic)
- Rex Arthur
- Rex Vincent conquering
- Rex Victor conqueror
- Rex Francis Frenchman, Frank
- Rex Theodore gift of God
- Rex Martin of Mars
- Rex Oliver
- Rex Leo lion
Middle names from Rex's era
Names whose popularity rose and fell with Rex's, so they feel of a piece with it.
- Rex Glenn valley (Gaelic)
- Rex Jerome sacred name
- Rex Carlton "settlement of free peasants"
- Rex Philip fond of horses
- Rex Gerard "spear" + "strong"
- Rex Alan
- Rex Wendell from the tribal name Wendel
- Rex Lawrence from Laurentum; associated with laurel
- Rex Alfonso "noble" + "ready"
- Rex Myron "myrrh, perfume"
Try it with your last name
The surname changes everything: a middle name that flows with Rex can clash with your last name. Check Rex with a middle and last name for rhythm, initials and the monogram.
How these were chosen
There is no official record of middle names, so these come from sound rules, not popularity: a different number of syllables from Rex, a different first sound and ending, and no repeated consonant or vowel run-on where the names meet. Initials depend on your last name, so the full-name checker tests them. Candidates are names given to at least 2,500 boys in the last five years. Style groups use our measured style lists, and "same era" names are those with the most similar popularity curve to Rex.