Catharine Gouger Waugh McCulloch (June 4, 1862 – April 20, 1945) was an American lawyer, suffragist, and reformer.

Raised in Illinois, she graduated from Rockford Female Seminary in 1882, where she wrote a thesis on women's wages and earned both a B.A.

[1] McCulloch was a member of the Equity Club, a correspondence network founded in 1887 to provide support, friendship, and advice among women lawyers across the country.

McCulloch's public-oriented methods of mobilizing supporters through rallies and publications reflected the style of many clubwomen, settlement-house workers, and other Progressive Era activists who sought suffrage as a means to advance other reform efforts.

Her approach contrasted with that of more conservative members of the Illinois Equal Suffrage Association like Grace Wilbur Trout, who preferred more quiet and diplomatic lobbying.

[2] While a Justice of the Peace, she made national headlines by agreeing to conduct egalitarian marriage ceremonies in which she omitted the word "obey" from the ritualized words the woman was supposed to say; at that time, the man pledged to "love, honor and cherish" while the woman pledged to "love, honor and obey.

[9] She was the legal adviser for the National American Woman Suffrage Association (which became the League of Women Voters in 1920 after passage of the 19th Amendment) and was its first vice president.