Kotiteollisuus is a Finnish hard rock/heavy metal band that was formed in 1991 in Lappeenranta. The band released its first demo tape in 1993 under the name "Hullu ukko ja Kotiteollisuus" ("Crazy Old Man and Home Industry"). The shortened name and current line-up was established in 1997.

Kotiteollisuus is said to combine "furious heavy metal with Finnish sullenness". Subjects frequently touched upon in songs are the current state of the nation, religion and mankind in general. The band members have become known for their outspokenness during interviews and shows. Especially guitarist-vocalist Jouni Hynynen is known for insulting and commenting on the audience during live shows.