Lee Si-eon

Lee Si-eon is one of those actors who sneaks up on you — you start watching Reply 1997 for the nostalgia and the romance, and then suddenly he's stealing every scene he's in with that deadpan, bumbling energy that's genuinely hard to pull off. His comic timing as the dorky sunbae in that show felt so lived-in and real that I keep forgetting he was acting. And then seeing a completely different side of him on I Live Alone, just a guy navigating bachelor life on camera for years, made him feel even more like someone you actually know. Seoul Institute of the Arts background, stage work in the mix — there's real craft underneath the goofball exterior, and that combination is exactly why he stuck around.

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Name (English)

Lee Si-eon

Name (Japanese)

イ・シオン

Reading

い・しおん

Born

July 3, 1982 (age 44)

Origin

Busan, South Korea

Height

176 cm

Occupation

film actor / actor / television actor / stage actor

Zodiac / Chinese zodiac

Cancer / Dog

• Instagramhttps://www.instagram.com/lee_si_eon/
• Xhttps://x.com/dm33482
• Wikipedia (English)https://en.wikipedia.org/wiki/Lee%20Si-eon
• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E3%82%A4%E3%83%BB%E3%82%B7%E3%82%AA%E3%83%B3
• Wikidatahttps://www.wikidata.org/wiki/Q6781666

Tags

• film actor
• actor
• television actor

Last updated

September 23, 2026

Facts are limited to publicly available information up to 2024; non-public or unconfirmed items are omitted. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.