Oby is an uncommon yet distinctive given name of uncertain origin. It is believed to have been derived from the Irish surname Ó Baoighill, which means "descendant of Baothghilla." Baothghilla itself is thought to mean "life of valor," indicating a historical connection to Irish warrior families. The name Oby gained some popularity in the United States during the mid-20th century but has since become increasingly rare. It is often associated with individuals who prefer unique and uncommon names, reflecting their independent spirit or desire to stand out from the crowd.
Oby was quite popular in 1917 with five births that year. However, there was a notable gap of seven years before the name resurfaced again in 1924, with six more babies being named Oby. In total, over these two years, eleven children were given the name Oby.