Urotheca guentheri, also known commonly as Günther's graceful brown snake and the striped glasstail, is a species of snake in the family Colubridae.

The specific name, guentheri, is in honor of German-born British herpetologist Albert Günther.

[3] U. guentheri is found in Costa Rica, Honduras, Nicaragua, and Panama.

[2] The preferred natural habitat of U. guentheri is forest, at altitudes of 70–1,800 m (230–5,910 ft).

[1] Dorsally, U. guentheri is dark brown with white lines.