Fels Ruvim (Ruwim) (1917, Krustpils — ?) — political activist, soldier.

Ruvim Fels completed primary school. In 1929, he moved to Riga.

He worked at a large trade warehouse and later enrolled in the Sholem Aleichem Evening Gymnasium, where mainly working youth studied.

He was involved in illegal activities and managed an underground printing press. In 1935, he became a member of the Communist Party of Latvia.

In 1936, Ruvim Fels went to Spain, where he participated in the Spanish Civil War on the side of the Republicans. He fought in divisional artillery, in the V. Kolarov Battery, on various sectors of the Andalusian and Extremadura fronts, including near the Tagus River. He also served as a scout in the battery.

On 18 January 1939, together with other International Brigade fighters, he was evacuated to Catalonia and, after crossing the Spanish–French border, was interned in the camps of Saint-Cyprien and Gurs. He escaped from the camp and made his way to Bordeaux.

After finding work as a stoker on a Belgian steamship, he reached Antwerp. Later, he worked as a stoker on a Yugoslav steamship operating between Spain and Africa.

In February 1941, Ruvim Fels arrived in Vladivostok via the Pacific Ocean. On 9 March 1941, after crossing the entire Soviet Union, he reached Riga.

During World War II, he served as assistant head of intelligence and fought in the 43rd Latvian Guards Rifle Division. He finished the war with the rank of captain.

After the war, he lived and worked in Riga.

Lit.: Vater E. Jews of Latvia in the Struggle against Nazism. Fighters of Latvia in Spain. 1936–1939. Memoirs and Documents. Riga: Liesma, 1970.