Advice and consent is an English phrase frequently used in enacting formulae of bills and in other legal or constitutional contexts, describing a situation in which the executive branch of a government enacts something previously approved of by the legislative branch.

The expression is frequently used in systems where the head of state has little practical power, and in practice the important part of the passage of a law is in its adoption by the legislature. For example, in the United Kingdom, a constitutional monarchy, bills are headed:

This enacting formula emphasizes that, although legally the bill is being enacted by the Queen of the United Kingdom (specifically, by the Queen-in-Parliament), it is not through her initiative but through that of Parliament that legislation is created.

In the United States, "advice and consent" is a power of the United States Senate to be consulted on and approve treaties signed and appointments made by the President of the United States to public positions, including Cabinet secretaries, federal judges, and ambassadors. This power is also held by several state Senates, which are consulted on and approve various appointments made by the state's chief executive, such as some statewide officials, state departmental heads in the Governor's cabinet, and state judges (in some states).