Tatsuya Yoshida (吉田達也 Yoshida Tatsuya) (born in Kitakami, Iwate) is a Japanese musician and composer who is the only consistent member of the renowned progressive rock duo Ruins, as well as Koenji Hyakkei. He is also a member of the progressive rock trios Korekyojinn and Daimonji. Outside of his own groups, Yoshida is renowned for his tenure as drummer in the indie progressive group YBO2, a band also featuring guitarist KK Null, whom he also joins in the current line up of Zeni Geva and he has played drums in a late edition of Samla Mammas Manna. He has been cited as "[the] indisputable master drummer of the Japanese underground" .
Along with his participation in bands, he has also released several solo recordings.
- Solo Works '88 (1988)
- Solo Works '89 (1989)
- Magaibutsu '91 (1991)
- Drums, Voices, Keyboards & Guitar (1994)
- Pianoworks '94 (1994)
- First Meeting (1995)
- A Million Years (1997)
- A Is for Accident (1997)
A complete list of all recordings Yoshida Tatsuya appears on can be found here.