The Railways Clauses Act 1863 (26 & 27 Vict. c. 92) is an act of the Parliament of the United Kingdom that standardised provisions and definitions relating to railways in the United Kingdom.
The Waterworks Clauses Act 1863 (26 & 27 Vict. c. 93) and the Companies Clauses Act 1863 (26 & 27 Vict. c. 118), passed at the same time as the act, standardised provisions and definitions relating to waterworks companies and companies in the United Kingdom.
As of 2025, the act remains in force in the United Kingdom.
The Railways Clauses Consolidation Act 1845 (8 & 9 Vict. c. 20) and the Railways Clauses Consolidation (Scotland) Act 1845 (8 & 9 Vict. c. 33) standardised provisions and definitions relating to railway companies in England and Wales and Ireland and Scotland, respectively.