Osamu Yoshioka

{{Infobox musical artist

| name = Osamu Yoshioka

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| birth_date = {{birth date|1934|2|19}}

| birth_place = Yamaguchi Prefecture, Japan

| death_date = {{death date and age|2010|5|17|1934|2|19}}

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| genre = Kayōkyoku

| occupation = Lyricist

| years_active = 1956–2010

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{{nihongo|Osamu Yoshioka|吉岡 治|Yoshioka Osamu|February 19, 1934 – May 19, 2010}} was a renowned Japanese lyricist.{{cite news|url=http://www.zakzak.co.jp/entertainment/ent-news/news/20100518/enn1005181627014-n2.htm|title=最後まで創作意欲...大作詞家・吉岡治さん「天城越え」秘話|publisher=Zakzak|date=2010-05-18|accessdate=2014-03-13}}
{{cite news|url=http://www.yomidr.yomiuri.co.jp/page.jsp?id=25149|title=作詞家・吉岡治さんが急性甲状腺炎のため死去、７６歳|publisher=Yomi Dr.|date=2010-05-18|accessdate=2014-03-13|archive-url=https://web.archive.org/web/20140314073751/http://www.yomidr.yomiuri.co.jp/page.jsp?id=25149|archive-date=2014-03-14|url-status=dead}}
{{cite news|url=http://www.oricon.co.jp/news/76547/full/|title=吉岡治さん通夜に500人参列　石川さゆり「気持ちの整理がつかない」|publisher=Oricon Style|date=2010-05-24|accessdate=2014-03-13}}
{{cite news|url=http://www.nikkanberita.com/read.cgi?id=201103091253583|title=【演歌シリーズ】（１３）　吉岡治 歌手再生の手練 II—都はるみ・石川さゆりの甦り—　　佐藤禀一|publisher=Nikkan Berita|date=2011-03-09|accessdate=2013-03-13}}
{{cite news|url=http://www.zakzak.co.jp/entertainment/ent-news/news/20100527/enn1005271557011-n2.htm|title=忘れられない「天城越え」合宿...弦哲也が語った吉岡治さん秘話|publisher=Zakzak|date=2010-05-27|accessdate=2014-03-13}}
{{cite news|url=http://www.news24.jp/articles/2010/05/25/07159809.html|title=コピー作詞家・吉岡治さん告別式、４００人が参列|publisher=Nittele News24|date=2010-05-25|accessdate=2014-03-13}}
{{cite news|url=http://www.47news.jp/CN/201005/CN2010051701001030.html|title=吉岡治氏死去　作詞家|publisher=47News (Yonnana News)|date=2010-05-17|accessdate=2014-03-13}}
{{cite news|url=http://www.asahi.com/showbiz/music/TKY201005170368.html|title=「天城越え」「キャプテン翼」など作詞、吉岡治さん死去|publisher=Asahi Shimbun Digital|date=2010-05-17|accessdate=2014-03-13}}
{{cite news|url=http://headlines.yahoo.co.jp/hl?a=20100517-00000591-san-ent|title=「天城越え」「さざんかの宿」作詞家、吉岡治氏死去|archiveurl=https://web.archive.org/web/20100520111802/http://headlines.yahoo.co.jp/hl?a=20100517-00000591-san-ent|archivedate=2010-05-20|author=Sankei Shimbun|author-link=Sankei Shimbun|publisher=Yahoo Japan|date=2010-05-17|accessdate=2014-03-14}}
{{cite news|url=http://www.sponichi.co.jp/entertainment/news/2010/05/18/08.html|title=「天城越え」の作詞家、吉岡治さん急逝...|archiveurl=https://web.archive.org/web/20100520015413/http://www.sponichi.co.jp/entertainment/news/2010/05/18/08.html|date=2010-05-18|archivedate=2010-05-20|accessdate=2014-03-14}}
{{cite news|url=http://www.shikoku-np.co.jp/kagawa_news/locality/20120610000123|title=吉岡治さん顕彰碑建立／石川さゆりさんら除幕|date=2012-06-10|publisher=Shikoku News|accessdate=2014-03-14}}
{{cite news|url=http://to-ryo.com/menu02/2012/08/post-19.html|title=吉岡治の顕彰碑が小豆島に建ったぞ|work=Ryotaro Konishi official site|date=2012-08-02|accessdate=2013-03-14}}
{{cite news|url=http://www.sponichi.co.jp/entertainment/news/2010/09/05/kiji/K20100905Z00000100.html|title=島津悦子が歌う　吉岡治さん"最後のメッセージ"|publisher=Sponichi Annex|date=2010-09-05|accessdate=2014-03-14}} Vice-president of the Japan Lyricists' Association. Earlier he used the pen name "{{nihongo2|吉岡オサム}}" (pronounced the same).