The Navy League is a non-profit civilian organization dedicated to informing the American people that the United States of America is a maritime nation and that its national defense and economic well-being are dependent upon strong sea services-United States Navy, United States Marine Corps, United States Coast Guard and United States Merchant Marine. 

Navy League councils support active duty military personnel and their families through "adoption" of ships, installations, and units; commissioning ceremonies; award programs; and other recognition programs.

Individual councils are also involved in promoting youth-oriented activities in their communities such as US Naval Sea Cadet Corps, NJROTC, MCJROTC, and ROTC units along with other recognized youth programs.