In the United Kingdom, the Reform Act could refer to various Acts
Reform Act of 1832 (The "First Reform Act" or "The Great Reform Act"), which abolished rotten boroughs and gave representation to previously unrepresented urban areas like Birmingham etc.
Reform Act of 1867 (The "Second Reform Act"), which widened the franchise, and adjusted representation to be more equitable
The Ballot Act 1872 (sometimes called the "Reform Act of 1872"), which introduced the secret ballot.
Corrupt and Illegal Practices Prevention Act 1883 (sometimes called the "Reform Act of 1883"), which introduced campaign spending limits.
Representation of the People Act 1884 (also known as the "Third Reform Act"), which allowed people in counties to vote on the same basis as those in towns
Reform Act of 1886, which split multi-member constituencies into multiple single-member ones
