Kubijovyč was born in 1900 in Nowy Sącz; his father Mykhailo was a Greek-Catholic of Ukrainian descent, while his mother was Maria Dobrowolska, a Catholic of Polish extraction.

[2] In 1918, Kubijovyč enrolled on a doctoral programme at the Jagiellonian University in Kraków, but World War I and his enlistment into the Ukrainian Galician Army interrupted his education.

[10] In recognition of his work, Kubijovyč obtained a financial scholarship from the Polish Ministry of Religious Affairs and Public Education for his journey to Czechoslovakia and Romania.

[1][3][14] In April 1941, Kubijovyč asked Hans Frank to create under the auspices of Nazi Germany an ethnically filtered Ukrainian area within the General Government or an autonomous state, where Poles and Jews would not be allowed to live.

[20] On August 16, 1942, a message from the Ukrainian Central Committee (UCC) was published in the Lviv News [uk] newspaper stating, "Anyone who hides Jews or hinders their resettlement will be punished.

In 1943, as Ukrainian peasants in the Zamość region were accused of resistance, Volodymyr Kubijovyč successfully intervened with Hans Frank to prevent reprisals.

[25] At other times, he was reduced to writing in protest to the German authorities against the impact of their rule of terror on the Ukrainian civilian population, which included unprovoked public abuse, arbitrary killings and mass shootings.

"[27] According to some Ukrainian sources, Kubijovyč tried to use his official position to ameliorate Ukrainian-Polish wartime tensions in Galicia by calling for an end to the armed underground conflict between the two sides in 1944.

[28] But in his correspondence with Nazi officials "he glorified Hitler, shared anti-Semitic tropes, and advocated the cleansing of Jews and Poles from the majority Ukrainian areas of the General Governorate for the Occupied Polish Region".

[5] In a letter dated February 1943 and addressed to Hans Frank, Kubijovych wrote, "Arrests and shootings of persons unfit for work in the District of Sanok.

During the period from 18 to 24 January 1943 about 300 persons were arrested in the neighborhood of Sanok in accordance with lists compiled some time before by the local mayors on orders of the authorities.

[29] After assassination of Otto Bauer, the Nazi vice-governor of the District of Galicia, Volodymyr Kubijovyč made a speech at the funeral on February 15, 1944 glorifying Hitler and the German army.

Reflecting Kubijovyč's own strong Ukrainophile views, it was intended to preserve the Ukrainian national heritage, which he saw as being neglected and downgraded under the Soviet rule.

A revised and expanded English-language edition of the ten-volume alphabetic part appeared under the title Encyclopedia of Ukraine in Canada in the 1980s and 1990s, only after Kubijovyč's death, and is presently being put on-line.

He drew the respect of the Polish intellectual Jerzy Giedroyć, another resident of Paris, who noted in his autobiography that Kubijovyč had behaved honourably during the war ("Zachował się świetnie").

[35] It also includes pseudoscience in relation to race, referencing theories by one of the foremost racial theorists in Nazi Germany Ludwig Ferdinand Clauß [de] in an attempt to analyze the psychology of the Ukrainian population.

However, following a complaint from Israeli ambassador to Ukraine Michael Brodsky, the mayor of Kyiv, Vitalii Klychko, personally intervened and prevented the street from being renamed.