Tochigi 1st District (Japanese: 栃木県第1区, Hepburn: Tochigi-ken Dai-ichi ku) is a district of the Japanese House of Representatives located within Tochigi Prefecture.

The first occurred in the year 2000, when incumbent candidate Hajime Funada lost to Democtratic Party newcomer Hiroko Mizushima by about 16,000 votes.

Funada was able to retake the seat in 2003 and hold it again in 2005, thanks in part to the popularity of Junichiro Koizumi's government.

However, in 2009 he lost again, this time to newcomer Hisashi Ishimori of the Democratic Party.

Liberal Democratic Party, four years after he initially left it.