Toivo Antikainen (Russian: То́йво А́нтикайнен, 8 June 1898 – 4 October 1941) was a Finnish-born communist and a military officer of the Soviet Red Army.

Antikainen was also charged of the murder of the Finnish officer Antti Marjoniemi who was killed in the 1922 Battle of Kimasozero.

The right-wing press also claimed that Antikainen had tortured him and conducted some kind of cannibalism after Marjoniemi had been roasted in the camp fire, but these accusations were not based in reality.

[1] The trial caught worldwide attention as Antikainen and the Bulgarian communist Georgi Dimitrov, arrested in Berlin for alleged complicity in the Reichstag fire, were supported by an international solidarity campaign.

[3] Antikainen was even noticed by the Finnish American volunteers of the Spanish Civil War, a machine gun company of the Abraham Lincoln brigade was named after him.

[4] Due to the Antikainen case, the Finnish right-wing was eager to bring back the capital punishment, but this was strongly rejected by the liberals who collected a petition of more than 120,000 names against the intention.

In 1974, the Finnish-born KGB officer Toivo Vähä published his memoirs claiming that he had killed Marjoniemi with a knife by an order from Antikainen.

[1] After the 1939–1940 Winter War, Antikainen and the Finnish communist Adolf Taimi were released and deported to Soviet Union.

[1] According to the memoir of the exile Austrian communist Ruth von Mayenburg, Antikainen stayed at the Hotel Lux in Moscow and jumped out of the window as the NKVD officers were breaking his door.