A plain red flag with the green horizontal stripe and the golden hammer and sickle with a gold-bordered red star in its upper canton.
This flag was adopted by the Moldavian SSR on January 31, 1952. The flag has three horizontal bands of red, green (1/4) and red, with a hammer and sickle in the canton. As defined by the Presidium of the Supreme Soviet of the Moldavian Soviet Socialist Republic on the flag description:
The national flag of the Moldavian Soviet Socialist Republic consists of a panel of red color with a green stripe in the middle of the whole flag length, with the image on top of the red part of the flag from the flagpole golden hammer and sickle above a five-pointed red star framed by gold border. The ratio of the flag's width to its length is 1:2 with the bandwidth of green to the width of the flag 1:4
Between 1924 and the adoption of the flag in the 1940s, part of Moldova was organized as the Moldavian ASSR with the Ukrainian SSR, and used a red flag, with the gold hammer and sickle in the top-left corner, above the Cyrillic characters УРСР (URSR, Ukrainian initials of Ukrainian SSR) and the Latin characters RSSU. Between 1929 and 1937, the hammer and sickle was removed, and from 1935 on the Latin characters were removed.
In 1940, the flag was red with the gold hammer and sickle in the top-left corner, with the Cyrillic characters РССМ (RSSM) above them in gold in a serif font.
Flag of the Moldavian ASSR (1938-1940)
Flag of the Moldavian SSR (1940-1952)
Flag of the Moldavian SSR (1952-1990)
With perestroika in force, the Moldovan nationalism came in place with the Popular Front of Moldova being involved. On April 27, 1990, the new flag of the Moldavian SSR consisted of the Romanian tricolor with the emblem of the Moldavian SSR in the centre. However, it was decided to use the flag without the emblem until new symbols were worked on. When Moldavia declared sovereignty in June 1990, the new flag was adopted on November 6, 1990 and remains the flag of Moldova to this day.
Unofficial flag of the Moldavian SSR (1990, early prototype)