MallowbyNames

Reiss

REES · Of uncertain origin; possibly a variant of Reese, meaning 'ardor' or 'enthusiasm' in Welsh.

2025 rank (boys)
#6,803
Babies named in 2025
12
Peak popularity
1999
2025 frequency
1 in 142,340 boys
Usually for
Girls & boys
Trend
Holding steady

Holding steady, #6,803 for boys today.

Popularity of Reiss since 1990

Babies named Reiss per year in U.S. Social Security records.

59141990200020102020Most births 1999GirlsBoys
GirlsBoys
Data table (by decade)
DecadeGirlsBoys
1990s042
2000s1579
2010s4952
2020s038

Meaning & origin

Reiss is a name of uncertain origin, likely a variant of the Welsh name Reese, meaning ardor or enthusiasm. First recorded in the U.S. in 1990, it peaked in popularity in 1999. As of 2025, it ranked 6803, with about 1 in 142,340 newborns receiving the name, indicating a stable but low level of usage. The name is most commonly given in New York. While the trajectory remains stable, Reiss remains a distinctive choice, blending a familiar sound with a spelling that sets it apart from the more common Reese and Rhys.

Reiss is likely a variant of the Welsh name Reese, which derives from the Old Welsh name Ris, meaning 'ardor' or 'enthusiasm'. The spelling Reiss may also arise as an Anglicization of the German surname Reiss, meaning 'giant' or 'rice'. In the Welsh context, the name has been in use as both a given name and a surname, with the double-s form gaining some popularity in the late 20th century.

Where Reiss is most popular

Births per 100,000 boys by state, 2025. The lightest shade means too few recorded births.

Nicknames & variants

Nicknames: Ree

Variants: Reese, Rhys

Sibling names for Reiss

Names that share Reiss's style, for a brother or sister.

Sisters: Sienna, Maeve, Elara, Niamh, Brynn

Brothers: Owen, Evan, Dylan, Liam, Gavin

A parent animal hugging its little one, the personalized name page

R is for Reiss, our favorite little person.

R is for Reiss…”

In a Mallowby alphabet book, Reiss's letter becomes Reiss's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Reiss's book

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Questions parents ask

What does the name Reiss mean?
The meaning of Reiss is uncertain but it is likely a variant of the Welsh name Reese, derived from the Old Welsh 'Ris' meaning ardor or enthusiasm.
How popular is the name Reiss?
In 2025, Reiss ranked 6803 in the United States, with approximately 1 in 142,340 babies given the name. Its peak popularity was in 1999.
Is Reiss a boy's or girl's name?
Reiss is used as a unisex name, though it is more common for boys.