This flag was adopted by the Kirghiz SSR on December 22, 1952.
Prior to this, the flag was red with gold Cyrillic characters in the top-left corner, КЫРГЫЗ ССР (Kirghiz SSR) and КИРГИЗСКАЯ ССР (Kyrgyzskaja SSR) in a serif font.
Flag of the Union of Soviet Socialist Republics (USSR) Armenian SSR · Azerbaijan SSR · Byelorussian SSR · Estonian SSR · Georgian SSR · Karelo-Finnish SSR (1940–1956) · Kazakh SSR · Kirghiz SSR · Latvian SSR · Lithuanian SSR · Moldavian SSR · Russian SFSR · Tajik SSR · Transcaucasian SFSR (1922–1936) · Turkmen SSR · Ukrainian SSR · Uzbek SSR