Miho Saiki is a Japanese voice actor and actress from Kumamoto Prefecture, born on July 8th. She is affiliated with the talent management firm Aoni Production. Saiki holds a master's degree in psychology from the Graduate School of Literature at Ritsumeikan University and is a graduate of the 22nd term of the Aoni Juku training school in Tokyo.

Saiki began her career in the early 2000s, with one of her first major roles in 2004 as the character Maho in the anime series BECK. That same year, she also joined the cast of the long-running series Bleach, voicing the character Rin Tsubokura. Her role in Bleach would continue over many years, including in the film Bleach: Memories of Nobody and the later Bleach: Thousand-Year Blood War arc.

Throughout her career, Saiki has taken on a variety of supporting roles in notable anime series. In 2005, she voiced Kaori Asou in Paradise Kiss. The following year, she provided voices for multiple characters in the series Solty Rei. In 2007, she was part of the cast for Clannad, playing the character Mitsui. She also had a role in the anime Sketchbook ~full color's~ as Buchi. In 2008, she appeared in the second season of Minami-ke, titled Minami-ke: Okawari, as the character Fuyuki.

In addition to her work in television series, Saiki has contributed to the Pokémon franchise, voicing the character Barbara in the anime. A more recent role includes Itsuki Kusunoki in the 2020 series Natsunagu!. Beyond animation, her work has also extended to video games, such as roles in the Persona series, and she has been involved in dubbing foreign films and television series into Japanese. Saiki is noted to have perfect pitch, a skill that is uncommon among voice actors.