|Born:||August 19, 1973, Tokyo, Japan|
|Years active:||1998 - present|
Osamu Ryutani (龍谷修武 Ryūtani Osamu?) is a voice actor that affiliated with Aoni Production.
- Ultraman Cosmos 2: The Blue Planet - Voice of Ultraman Justice
- Ultraman Cosmos Vs Ultraman Justice: The Final Battle - Voice of Ultraman Justice
- Ultraman Max - Voice of Ultraman Xenon
- Ultra Galaxy Mega Monster Battle: Never Ending Odyssey - Voice of Alien Metron
- Ultraman Zero Televi-Kun - Voice of Ultraman Leo
- It seemed as though Osamu is the first voice actor to voice more than one Ultramen.