The Treason Act 1553 (1 Mar. Sess. 1. c. 1) was an Act of the Parliament of England. (It should not be confused with another Act about treason passed in the same year, 1 Mar. Sess. 2 c. 6.) The Act abolished all forms of treason that had been created since 1351, except the Treason Act 1351 itself. It also abolished all felonies created since the beginning of the reign of Henry VIII.

Repeal

Section 2 of this Act was repealed on 28 July 1863 by section 1 of, and the Schedule to, the Statute Law Revision Act 1863. The rest of the Act was repealed by section 10(2) of, and Part I of Schedule 3 to, the Criminal Law Act 1967.

Other treason legislation

Another act passed**** in**** the same**** year****,**** the **** (1 Mar****.**** Sess****.**** 2.**** c.**** 6), made**** it**** high**** treason to**** counterfeit foreign coins,**** or**** forge the Queen's privy seal****,**** signet**** ring**** or**** royal sign****-manual****.**** This act was replaced by the Forgery Act 1830, which continued this form of treason until it was repealed in 1861. (That offence continued to exist as a felony (after 1967, simply an offence) until 1981.)