“Arin” can refer to several different things, but the most searched and current meaning right now is Arin the South Korean singer and actress.

Who is Arin (person)?

Arin (real name Choi Ye-won) is a South Korean singer and actress, best known as a member of the K‑pop girl group Oh My Girl. She was born on June 18, 1999, in Busan, South Korea, and attended the School of Performing Arts Seoul, a well‑known arts high school. She debuted with Oh My Girl in April 2015 and has since become popular for her bright image and acting roles in dramas.

Career highlights

  • Debuted with Oh My Girl on April 20, 2015, performing their debut single on SBS MTV’s “The Show.”
  • Joined the sub‑unit Oh My Girl Banhana in 2018.
  • Appeared on TV programs like “Queendom” and “The Ultimate Watchlist 2.”
  • Made her acting debut in the web series “The World of My 17” in 2020.
  • Acted in projects such as “Urban Myths” (film) and the hit fantasy drama “Alchemy of Souls,” where she played Jin Cho‑yeon.
  • Starred in more recent dramas like “S Line” and “My Girlfriend Is the Man!” based on webtoons.

Recent activities

In 2025, Arin left her original agency WM Entertainment but chose to remain in Oh My Girl as a member. She then signed an exclusive contract with the agency ATRP, signaling a focus on both music and acting activities going forward.

Philanthropy image

Arin has also built a reputation for frequent charitable donations in South Korea. She has donated to organizations such as The Beautiful Foundation, Hope Bridge Korea Disaster Relief Association, and initiatives supporting flood victims and low‑income households, often timing her donations with special days like Coming‑of‑Age Day or World Bee Day.

Other meanings of “Arin”

Because your phrase is “arin who is,” you might also see these:

  • ARIN (organization): The American Registry for Internet Numbers, a nonprofit that manages IP address and ASN allocations for the U.S., Canada, and parts of the Caribbean and North Atlantic.
  • ARIN whois / RDAP: Online lookup services to see who holds specific IP address ranges or autonomous system numbers in ARIN’s database.

So, if you meant the K‑pop star, Arin is a 1999‑born singer and actress from Oh My Girl who has been expanding into dramas and solo activities, while staying active in the group.

Information gathered from public forums or data available on the internet and portrayed here.