The first name Sinclair
A unisex name.
Pronounced /sɪŋˈklɛəɹ/ 2 syllables Unisex Also a surname
Meaning and origin
Derived from Saint Clare, to whom the clan's churches were dedicated.
From Wiktionary (CC BY-SA 4.0).
Popularity
Babies registered in England and Wales, 1996–2025
Sinclair last appeared in the official list in 2012, given to 3 boys. It peaked in 2001, with 4 births (#2,587).
Office for National Statistics; years with fewer than three births are not published and show as zero. Compare Sinclair with other names.
Popularity in the United States
Babies named Sinclair at birth, 1880–2025
In 2025, 29 girls born in the United States were named Sinclair, the 4,740th most popular girls’ name that year. It was used most in 1924, when 29 were.
US Social Security Administration, from applications for a Social Security card. A name is only published for a year when at least five babies were given it, so quieter years show as zero.
Nicknames and spellings
Other spellings and forms
- Sinclaire
- Sinclare
- Sinclar
Famous people named Sinclair
5 on Wikidata, most written-about first
- Sinclair LewisAmerican writer and playwright (1885–1951)
- Sinclair WeeksAmerican politician (1893-1972)
- Don S. DavisAmerican character actor (1942–2008)
- Marc AlmondBritish singer, born 1957
- Alan PatersonBritish high jumper (1928–1999)
Questions
- What does the name Sinclair mean?
- Derived from Saint Clare, to whom the clan's churches were dedicated.
- How popular is the name Sinclair?
- In 2012, 3 boys born in England and Wales were named Sinclair, ranking 4,805th. Its peak was 2001, with 4 births.
- Is Sinclair a boy's or a girl's name?
- Both. Of the 1,912 US babies named Sinclair since 1880, 25% were girls and 75% boys.
- When was Sinclair most popular?
- 1924 in the United States, when 29 babies were named Sinclair, its highest rank at 1,409th.
- How do you pronounce Sinclair?
- Sinclair is /sɪŋˈklɛəɹ/, 2 syllables.
- What are other spellings of Sinclair?
- Sinclaire, Sinclare and Sinclar.
- Is Sinclair also a surname?
- Yes. Sinclair is used as a surname as well as a first name; its surname page has the origin and how many people carry it.