Aikou Ogata is a Japanese voice actor whose professional name is also rendered as Ogata Aikou. In some credits, he is identified by the alternative name Yoshihiro Okada.

Ogata is best known for his role as Philippe Myers in the acclaimed science fiction anime series Planetes, which aired in 2003. The character, Philippe Myers, is the chief clerk of the Debris Section on the ISPV 7 space station. Ogata voiced this supporting role in the original Japanese language release of the series and also reprised the character for the Planetes Picture Drama.

Beyond his work on Planetes, Ogata's voice acting credits include a role in the 2003 film Nasu: Summer in Andalusia, where he played the character Rivera Ojisan. He also appeared in the original Fullmetal Alchemist television series from 2003, voicing an old man in episodes thirty one, thirty two, and thirty six. Later in his career, he contributed to the Tamayura film series, with a role in Tamayura: Graduation Photo Part 1 - Kizashi, which was released in 2015.