William Griffith Wilson (November 26, 1895 – January 24, 1971), also known as
Bill Wilson or
Bill W., was the co-founder of
Alcoholics Anonymous (AA), an international mutual aid fellowship with over two million members belonging to 100,800 groups of
alcoholics helping other alcoholics achieve and maintain
sobriety. Following
AA's Twelfth Tradition of anonymity, Wilson is commonly known as "Bill W." or "Bill." After Wilson's death in 1971, his full name was included in obituaries.