lawgiver

2. A person who establishes a code of laws for a community or nation.

Moses is often described as a great lawgiver in religious tradition.

3. A figure in history credited with creating a system of justice.

Solon of Athens was a famous lawgiver who reformed the city's rules.

4. A person or group that sets the standards or rules for a field.

The committee acted as a lawgiver for the sport, writing new safety rules.