The name Rein is a girl's name meaning "royal authority; water falling in drops condensed from vapor in the atmosphere".

4 Letter Girl Names

Names Ending in N for Girls

One Syllable Names for Girls

Names That Mean Water

Names That Mean Royal

Names That Mean English

Names That Mean Reign

Names That Mean Falling

Names That Mean Drops

Rein, along with Reign, have taken over from Rain as a trendy word name. Should you rein it in or let it rein? Okay, bad puns we know, but that's the downside of word names. This is a true unisex name, given to 15 girls and 12 boys in the US in one recent year.

Word Names for Babies

Rein

The name Rein peaked for girls at #7560 in 2023. Rein is occasionally used for boys in 2025.

The name Rein is a boy's name meaning "royal authority; water falling in drops condensed from vapor in the atmosphere".

4 Letter Boy Names

Names Ending in N for Boys

One Syllable Names for Boys

Rein, along with Reign, have taken over from Rain as a trendy word name. Should you rein it in or let it rein? Okay, bad puns we know, but that's the downside of word names. This is a true unisex name, given to 15 girls and 12 boys in the US in one recent year.
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This could work as a Christmas-inspired form of Reign, Reina, and Rain too, as some will think of reindeer on seeing it. 

Estonia

The name Rein peaked for boys at #3712 in 1953. Rein is occasionally used for girls in 2025.

Rein

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