Fr. Gregory Chomicky (Григорій Хомицький, Hryhorii Khomyts'kyi) was one of the first Ukrainian Orthodox clergymen in the United States. He was a leader of the proto-Orthodox "Ukrainian National Church" in the mid-1910s, and later played a major role in both the Ukrainian Orthodox Church in America and the Ukrainian Orthodox Church of the USA. He helped to found St. Vladimir Ukrainian Orthodox Church in Cleveland (now St. Vladimir Cathedral) and St. Michael parish in Jeannette, Pennsylvania, and served at a number of parishes in Delaware and Pennsylvania from the 1940s through the 1960s.

Fr. Gregory was born on October 11, 1891 in the village of Lubianky Vyshchi near Zbarazh in the Austro-Hungarian province of Galicia (now in Zbarazh raion, Ternopil' oblast', Ukraine) to Mykhailo Khomyts'kyi and Domitselia Adamovych. He completed his secondary education at the Ternopil' Gymnasium in 1911, then studied philosophy at the Franz Joseph Imperial University in L'viv. He emigrated to the United States in February, 1913. He continued his studies at the Roman Catholic seminary of Sts. Cyril and Methodius in Orchard Lake, Michigan, and then (at the request of the Ukrainian Greek Catholic Bishop Soter Ortyns'kyi) at St. Mary Seminary in Baltimore. His formal education was interrupted by illness in the fall of 1914, but he continued his studies independently.

He was ordained to the deaconate and priesthood in May 1915 by the Old Catholic Bishop Carmel Henry Carfora in Youngstown, Ohio, and was named Vicar General of the Ukrainian National Church. Due to concern about Bishop Carfora's canonicity, Fr. Gregory was re-ordained by Bishop Stephen Dzubay of the Russian Orthodox Mission in 1918. Fr. Gregory joined the eparchy of Archbishop Ioan (Teodorovych) upon his arrival in the United States in 1924. In the 1930s, he changed his allegiance to Bp. Bohdan (Shpyl'ka) of the Ukrainian Orthodox Church in America.

The late 1940s saw major changes in the landscape of Ukrainian Orthodoxy in North America, precipitated in part by the arrival of large numbers of post-war Displaced Persons, which, in contrast to previous immigration waves, included significant numbers of Orthodox Christians from central and eastern Ukraine. Among the refugees were Orthodox bishops such as Mstyslav (Skrypnyk) and Ilarion (Ohienko), and many Orthodox clergy. Fr. Gregory was literally in the middle of these events. In 1948, a Sobor (general Church Council) took place at the cathedral in Allentown, Pennsylvania, where he was the rector. This Sobor ratified the appointment of Abp. Mstyslav (then with the Ukrainian Greek Orthodox Church of Canada) to join Bp. Bohdan's eparchy. Fr. Gregory was heavily involved in the preparations for the Sobor, as well as with its aftermath (Bp. Bohdan and some priests and parishes did not go along with the Council's decisions and friction developed between him and the governing board of the Church). In 1950, joint Sobors of the Ukrainian Orthodox Church in America and the American Ukrainian Orthodox Church of the USA met in New York City, followed by an Extraordinary Sobor which unified the two Churches to form the present Ukrainian Orthodox Church of the USA (UOC of USA). Fr. Gregory remained with the UOC of USA until his death in 1974.

Fr. Gregory served as parish priest at Holy Trinity parish, Chicago (1915-1916, 1924); Sts. Peter and Paul Croatian Byzantine Catholic parish, Chicago (1916-1924, 1930-1937); St. Vladimir parish, Cleveland (circa 1925-1930); Buffalo, NY (1930); St. Michael parish, Jeannette, Penn. (1937-1939); Sts. Peter and Paul parish, Wilmington, Del. (1939-1941); the Ukrainian Orthodox Church of the Most Holy Mother of God, Allentown, Penn. (1941-1950); the Ukrainian Orthodox Church of St. Volodymyr, Ambridge, Penn. (1950-1954); and St. Michael parish, Scranton, Penn. (from 1954 until his retirement).