15th Seiyu Awards

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| awarded_for = Voice acting in Japan

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| date = {{start date|2021|3|6}}

| location = JOQR Media Plus Hall
Minato, Tokyo

| country = Japan

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| award1_type = Best Lead Actor

| award1_winner = Kenjiro Tsuda

| award2_type = Best Lead Actress

| award2_winner = Yui Ishikawa

| website = {{URL|http://www.seiyuawards.jp/}}

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| previous = 14th

| main = Seiyu Awards

| next = 16th

}}

The 15th Seiyu Awards was held on March 6, 2021 at the JOQR Media Plus Hall in Minato, Tokyo. The winners of the Merit Awards, the Kei Tomiyama Award, the Kazue Takahashi Award, and the Synergy Award were announced on February 16, 2021.{{cite news|url=https://www.animenewsnetwork.com/news/2021-02-16/some-of-the-15th-annual-seiyu-awards-winners-announced/.169555|title=Some of the 15th Annual Seiyū Awards Winners Announced|date= February 16, 2021|accessdate= March 6, 2021|publisher=Anime News Network}} The rest of the winners were announced on the ceremony day.{{cite news|url=https://www.animenewsnetwork.com/news/2021-03-06/kenjiro-tsuda-yui-ishikawa-win-15th-annual-seiyu-awards/.170315|title=Kenjiro Tsuda, Yui Ishikawa Win 15th Annual Seiyū Awards|date= March 6, 2021|accessdate= March 6, 2021|publisher=Anime News Network}}

class="wikitable"
style="background: #e0e0ff" |Winners !style="background: #e0e0ff" |Agency ! style="background: #e0e0ff" |Highlight Works
colspan="3" style="background: #ccccff" |Best Actor in a Leading Role
Kenjiro Tsuda |Amuleto |Akihito Narihisago (Id: Invaded)
colspan="3" style="background: #ccccff" |Best Actress in a Leading Role
Yui Ishikawa |mitt management |Violet Evergarden (Violet Evergarden: The Movie)
colspan="3" style="background: #ccccff" |Best Actors in Supporting Roles
Takehito Koyasu |T's Factory |Roswaal L. Mathers (Re:Zero − Starting Life in Another World)
Nobunaga Shimazaki |Aoni Production |Yuki Sōma (Fruits Basket 2nd Season)
colspan="3" style="background: #ccccff" |Best Actresses in Supporting Roles
Reina Ueda |81 Produce |Shuka Karino (Darwin's Game)
Akari Kitō |Pro-Fit |Nene Yashiro (Toilet-Bound Hanako-kun)
colspan="3" style="background: #ccccff" |Best New Actors
Masahiro Itō |Hibiki |Ren Nanahoshi (Argonavis from BanG Dream!)
Chiaki Kobayashi |Office Osawa |Makoto Edamura (Great Pretender)
Shimba Tsuchiya |Himawari Theatre Group |Sagami (My Teen Romantic Comedy SNAFU Climax)
colspan="3" style="background: #ccccff" |Best New Actresses
Rin Aira |Horipro International |Wakaba Harukaze, Raki Kiseki (Aikatsu on Parade!)
Kana Ichinose |Sigma Seven e |Yuzuriha Ogawa (Dr. Stone)
Riho Sugiyama |Mausu Promotion |Minare Koda (Wave, Listen to Me!)
Natsumi Fujiwara |Arts Vision |Abigail Jones (Great Pretender)
Azumi Waki |Haikyō |Adele von Ascham/Mile (Didn't I Say to Make My Abilities Average in the Next Life?!)
colspan="3" style="background: #ccccff" |Singing Award
style="background: #e0e0ff" |Winner ! style="background: #e0e0ff" |Members ! style="background: #e0e0ff" |Agency
Walküre |JUNNA Kiyono Yasuno Nozomi Nishida Nao Tōyama Minori Suzuki |
colspan="3" style="background: #ccccff" |Personality Award
style="background: #e0e0ff" |Winner ! style="background: #e0e0ff" |Agency ! style="background: #e0e0ff" |Highlight Works
Hiroki Yasumoto | Sigma Seven |

class="wikitable"
colspan="4" style="background: #ccccff" |Merit Award
colspan="2" style="background: #e0e0ff" |Winners !colspan="2" style="background: #e0e0ff" |Agency
colspan="2" |Eiko Masuyama	colspan="2"|Aoni Production
colspan="2" |Masane Tsukayama	colspan="2"|Seinenza Theater Company
colspan="4" style="background: #ccccff" |Kei Tomiyama Memorial Award
colspan="2" style="background: #e0e0ff" |Winner !colspan="2" style="background: #e0e0ff" |Agency
colspan="2"|Toshihiko Seki	colspan="2" |81 Produce
colspan="4" style="background: #ccccff" |Kazue Takahashi Memorial Award
colspan="2" style="background: #e0e0ff" |Winner !colspan="2" style="background: #e0e0ff" |Agency
colspan="2"|Yoshiko Sakakibara	colspan="2" |Freelance
colspan="4" style="background: #ccccff" |Synergy Award
colspan="4" style="background: #e0e0ff" |Winner
colspan="4" |Voicarion IX: Teikoku Koe Kabuki ~Nobunaga no Inu~ stage reading
colspan="4" style="background: #ccccff" |Special Honor Award
colspan="4" style="background: #e0e0ff" |Winner
colspan="4" |Demon Slayer: Kimetsu no Yaiba
colspan="4" style="background: #ccccff" |Kids/Family Award
colspan="2" style="background: #e0e0ff" |Winner !colspan="2" style="background: #e0e0ff" |Agency
colspan="2"|Rie Nakagawa	colspan="2" |Peerless Gerbera
colspan="4" style="background: #ccccff" |Foreign Movie/Series Award
colspan="2" style="background: #e0e0ff" |Winner !colspan="2" style="background: #e0e0ff" |Agency
colspan="2"|Kazuhiro Yamaji	colspan="2" |Seinenza Theater Company
colspan="2"|Kazue Komiya	colspan="2" |Theater Echo
colspan="4" style="background: #ccccff" |Influencer Award
colspan="2" style="background: #e0e0ff" |Winner !colspan="2" style="background: #e0e0ff" |Agency
colspan="2"|Kotori Koiwai	colspan="2" |Peerless Gerbera
colspan="4" style="background: #ccccff" |Most Valuable Seiyū Award
colspan="2" style="background: #e0e0ff" |Winner !colspan="2" style="background: #e0e0ff" |Agency
colspan="2"|Hiro Shimono	colspan="2" |I'm Enterprise