The white-browed tit-warbler (Leptopoecile sophiae) is a species of bird in the family Aegithalidae. The species was first described by Nikolai Severtzov in 1873. It is resident in the Tian Shan and central China as well as in the Himalayas where it is mainly found in winter. Its natural habitat is boreal forests.
These birds are small, weighing 6–8 g and are 8.5–10 cm long. The males are vibrantly colored, with distinctive blue-mauve underparts. Both males and females have a light brown crown and white supercilium (eyebrow). The rump and upper tail-coverts are violet blue. Females are generally duller, and can be distinguished by their pale underparts, whereas the males have violet-blue underparts and chest. The tail is relatively long.