Welsh Language Act or Welsh Language Measure refers to different primary legislation:
Welsh Language Act 1967 (c. 66), which extended the Welsh Courts Act 1942, restoring some rights for the official use of Welsh that had been removed in the 16th century Welsh Language Act 1993 (c. 38), which put Welsh on an equal footage to English for all public sector use Welsh Language (Wales) Measure 2011 (nawm 1) Welsh Language and Education (Wales) Act 2025 (asc 2)
See also
Welsh Courts Act 1942 National Assembly for Wales (Official Languages) Act 2012