Shōmei Yokouchi

{{Short description|Japanese politician (1942–2020)}}

{{one source|date=October 2020}}

{{Infobox officeholder

| name = Shōmei Yokouchi

| native_name = {{nobold|横内 正明}}

| native_name_lang = ja

| image = Yokouchi.jpg

| image_size = 220px

| caption = Official portrait, 1997

| office = Governor of Yamanashi Prefecture

| term_start = 17 February 2007

| term_end = 16 February 2015

| predecessor = Takahiko Yamamoto

| successor = Hitoshi Goto

| office1 = Member of the House of Representatives

| constituency1 = Yamanashi at-large (1993–1996)
Yamanashi 3rd (1996–2002)

| term_start1 = 19 July 1993

| term_end1 = 16 December 2002

| predecessor1 = Multi-member district

| successor1 = Takeshi Hosaka

| birth_date = {{birth date|1942|3|2|df=y}}

| birth_place = Nirasaki, Yamanashi, Japan

| death_date = {{death date and age|2020|4|21|1942|3|2|df=y}}

| death_place = Kōfu, Yamanashi, Japan

| alma_mater = University of Tokyo

| party = Independent

| otherparty = Liberal Democratic

}}

{{nihongo|Shōmei Yokouchi|横内 正明|Yokouchi Shōmei|March 2, 1942 – April 21, 2020}} was a Japanese politician. He represented the Yamanashi at-large district and later the Yamanashi 3rd district in the House of Representatives in the national Diet from 1993 until 2002 and was governor of Yamanashi Prefecture from 2007 until 2015. He was a graduate of the University of Tokyo Law Department.{{cite web |url=http://www.senkyo.janjan.jp/diet/profile/0068/00068331.html |script-title=ja:政治家情報 〜横内 正明〜 |trans-title=Politician Information ~Masaaki Yokouchi~|publisher=JANJAN |accessdate=2007-12-08 |language=Japanese |url-status = dead|archiveurl=https://web.archive.org/web/20090501145627/http://www.senkyo.janjan.jp/diet/profile/0068/00068331.html |archivedate=2009-05-01 |df= }}