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Actor · Singer

Seo In-guk

South Korean actor and singer

Seo In-guk is 39 years old, born on October 23, 1987 in Ulsan.

Next birthday in 352 days, turning 40.

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Born
October 23, 1987, Ulsan
Age
39
Zodiac sign
Scorpio
Country
South Korea
Known as
Actor, Singer

Official links: Official website (seoinguk.co.kr) · Instagram · X · Wikipedia

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Seo’s birthday, by the numbers

  • Seo In-guk was born on a Friday.
  • Seo In-guk has been alive for about 14,258 days.
  • Their 15,000-day milestone falls on November 16, 2028.
  • Their next birthday, turning 40, is on a Saturday.
  • Next milestone: Seo In-guk turns 40 on October 23, 2027, in 11 months. More milestone birthdays
  • Seo In-guk is younger than 5,065 and older than 1,781 of the living celebrities on CFOTD.
  • Half birthday: April 23. Birthstone: Opal and tourmaline.
  • Seo In-guk belongs to Millennials.

Age gaps

Born within weeks of Seo

Zac EfronActor · October 18, 1987Hilary DuffActor · September 28, 1987Ana IvanovicTennis player · November 6, 1987Tom FeltonActor · September 22, 1987Karen GillanActor · November 28, 1987Marouane FellainiSoccer player · November 22, 1987

Days and weekdays are worked out from the birth date. Compare Seo’s age with anyone.

Share Seo In-guk’s birthday, October 23?Make something for yourself or a birthday friend.
🏅Birthday certificateAdd a name, download a PDF or image🎂Printable birthday pageA free one-page PDF for October 23⭐Birthday twin cardA square card to share

Also born on October 23

All →
PeléSoccer player · (1940 to 2022)Ryan ReynoldsActor · Age 50"Weird Al" YankovicMusician · Age 67Emilia ClarkeActor · Age 40Álvaro MorataSoccer player · Age 34Masiela LushaActor · Age 41

Also born in 1987

All →
Lionel MessiSoccer player · June 24Luis SuárezSoccer player · January 24Maria SharapovaTennis player · April 19Karim BenzemaSoccer player · December 19Zac EfronActor · October 18Gerard PiquéSoccer player · February 2

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Birth dates and details from Wikidata (checked October 15, 2026, newest names added October 27, 2026). Ages update every day. Photos are freely licensed and credited on each profile. How we build this site · Report a mistake

Frequently asked questions

How old is Seo In-guk?

Seo In-guk is 39 years old, born on October 23, 1987 in Ulsan.

What is Seo In-guk’s zodiac sign?

Scorpio, born October 23.

Does Seo In-guk have an official website?

Yes: seoinguk.co.kr.