Hideki Tasaka is a Japanese voice actor born on March 15, 1975, in Shizuoka Prefecture. He is affiliated with the talent management firm Sigma Seven. Tasaka is a graduate of the Visual Techno Academia. Before joining Sigma Seven in 2003, he was represented by Kyu Production.

Tasaka began his career in the early 2000s, with one of his first notable roles being Duelo McFile in the 2000 series Vandread. Throughout the decade, he built a extensive portfolio of supporting characters in a wide array of anime television series. Among his many roles are appearances in GetBackers, Gravion, and RahXephon in 2002, followed by parts in Stratos 4 and Texhnolyze in 2003. His career continued steadily with roles in series such as SoltyRei in 2005, and in 2006, he appeared in popular titles like Ouran High School Host Club as Suzushima Tōru and in Otogi-Jūshi Akazukin as Fernando. In 2007, his roles included Isurugi Taiju in Shana Ō Yoshitsune and Takurō Shinjō in Skull Man. The following year, he was cast as Takurō Sakakiba in Persona: Trinity Soul.

The late 2000s and 2010s saw Tasaka continue in a variety of anime, often playing fathers, authority figures, or other character actors. He voiced the characters specified in the query, including Reginald Drummond in The Sacred Blacksmith in 2009, Sekiya Genemon Sadatou in PetoPeto-san in 2005, Makoto Yūki in the Yotsunoha OVA in 2008, and Isami Miyanomori in the Hanayaka Nari, Waga Ichizoku franchise, beginning with the 2012 OVA. Other notable credits from this period include the role of Komatsu's father in Puella Magi Madoka Magica in 2011 and the father of Takanashi in Working!! starting in 2010. He also had recurring roles as an announcer in the Saki anime series from 2008 to 2014. His career has continued into the 2020s with roles such as Hofsel in I'm Standing on a Million Lives in 2020.

Beyond anime, Tasaka has an extensive body of work in video games. He is known for providing the voice of Reks in the original Japanese version of Final Fantasy XII. He also voiced Keigo Sakuragawa in the game True Tears, based on the visual novel. He was a regular cast member in the otome game and drama CD series Hanayaka Nari, Waga Ichizoku, playing the role of Isami Miyanomori across multiple installments. His other game credits include roles in the SD Gundam G Generation series and Spectral Force Chronicles.

In addition to animation and games, Tasaka's career includes performances in drama CDs, such as in the series Ore no Shita de Agake, and in dubbed versions of foreign television series and films.