William McLellan (Scottish electrical engineer)
Colonel William McLellan CBE (1874–1934) was a Scottish electrical engineer. Born in Palnackie, McLellan joined Charles Merz in 1902 to form the Merz & McLellan consulting engineering partnership. In the 1920s, then Colonel McLellan, he designed the Galloway Hydro-Electric Power Scheme.
For the nanotechnologist, see William McLellan (nanotechnology). For the 15th-century Scottish noble, see William McLellan. For the 19th Century politician, see William McLellan (Australian politician).