Tomwool Creek is a creek in Timiskaming District and Cochrane District in northeastern Ontario, Canada.

[1] It is in the James Bay drainage basin and is a left tributary of Sarsfield Creek.

The creek begins at the outflow from Cariad Lake in geographic Black Township[2] in the municipality of Black River-Matheson, Cochrane District and heads south immediately into geographic Lee Township[3] in the Unorganized West Part of Timiskaming District to reach Verona Lake.

Sarsfield Creek flows via Meyers Lake, Woollings Creek, the Whiteclay River, the Black River, the Abitibi River and the Moose River to James Bay.

The creek travels through no communities; the nearest is Sesekinika, 9 kilometres (5.6 mi) southeast of the mouth of the creek.