Brothers Thomas (c. 1840 – 25 June 1867) and John Clarke (c. 1846 – 25 June 1867) were Australian bushrangers from the Braidwood district of New South Wales. They committed a series of high-profile crimes which led to the enacting of the Felons' Apprehension Act (1866), a law that introduced the concept of outlawry in the colony and authorised citizens to kill bushrangers on sight. Thomas was proclaimed an outlaw on 31 May 1866.