Tatsuya Yoshida (吉田達也, Yoshida Tatsuya) (born 9 January 1961) is a Japanese musician, drummer and composer who is the only consistent member of the renowned progressive rock duo Ruins, as well as of Koenji Hyakkei. He is also a member of the progressive rock trios Korekyojinn and Daimonji. Outside 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.
