Orline is of American origin, derived from the English surname Orlin, which is believed to have originated as a pet form of the given name Oliver. It is also sometimes considered to be a blend of the names Orlando andoline. The name has been relatively uncommon throughout history but has seen some limited use in recent times, particularly in the United States.
"The name Orline was quite popular between 1911 and 1935, with a total of 58 babies named Orline born during this period. The years with the highest number of births were 1917 and 1925, each seeing eight newborns named Orline. However, there seems to be no consistent trend in the popularity of the name throughout these years."