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Home β€Ί Baby Names Directory β€Ί Reilly

Reilly

β™‚ Boy

Pronounced RYE-lee /ˈɹaΙͺ.li/Medium

Meaning: UnknownMedium

In 30 seconds: Reilly is an English-recorded name whose meaning is unknown.
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Origin MediumEnglish
MeaningUnknown
U.S. rank (2025)#2708 β†— Rising
2025 U.S. births48 boys (0.00% of U.S. boys)
Peak year2007
Total births (all-time)β‰ˆ 4,558

Popularity in the U.S. Β· SSA data

peak 200719532025

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Our data lists Reilly as English in usage with an unknown meaning. It has the shape of an Irish surname turned given name, but since no meaning is documented here, the honest answer is that we do not know what it means.

With no verified meaning, variations or bearers on record, there is little more to add without guessing.

Did you know? Reilly likely reached first-name use through a surname or place-name route, which gives it that modern borrowed-from-history feel.
Overall data confidence 78%
Behind the Name - Reilly β€” etymology, usage, pronunciation, and related formsU.S. Social Security Administration β€” 2024 popularity rank and count supplied in the batch input CSV

Variations

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Nicknames

β€”

Famous Bearers

  • β˜…Reilly Smith (1991-)
    Canadian professional ice hockey forward in the NHL

If you like Reilly…

Kellyβ€” the same unisex feel
Billyβ€” lands in the same popularity range
Ryloβ€” another English name
Radleyβ€” a fellow English choice
Rigginsβ€” lands in the same popularity range

Explore names like Reilly

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Frequently Asked

What does the name Reilly mean?

Reilly is usually explained as meaning 'unknown' and is most often linked with English tradition.

How do you pronounce Reilly?

It's commonly said RYE-lee /ˈɹaΙͺ.li/.

Is Reilly a boy or girl name?

In this batch and in recent U.S. usage data, Reilly is used as a boy name.

How popular is Reilly?

In 2024, Reilly ranked #2816 in the U.S. for boys, with 46 births recorded.

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