There are no recognised septs of the clan Stirling, however, there are numerous spelling variations of the name recorded over the years.

They include:
Stairline, Stairling, Starlin, Starling, Stairlink, Sterline, Sterling, Sterlink, Sterlline, Sterlling, Sterllink, Steuline, Steuling, Steulink, Stewline, Stewling, Stewlink, Stirine, Stiring, Stirink, Stirline, Stirling, Stirlink, Strifelan, Strifeland, Strifelane, Strifelant, Strifelen, Strifelend, Strifelent, Strifelind, Strifelint, Strifelyn, Strifelynd, Striffelan, Striffeland, Striffelane, Striffelant, Striffelen, Striffelend, Striffelent, Striffelind, Striffelint, Striffelyn, Striffelynd, Strivelan, Striveland, Strivelane, Strivelant, Strivelen, Strivelend, Strivelent, Strivelind, Strivelint, Strivelyn, Strivelynd, Sturline, Sturling, Sturlink, Styrline, Styrling, Styrlink.