Kathryn Theresa Niehouse (née McBroom;[1][2] March 23, 1898 – February 25, 1961) was an American politician and insurance agent.

[2] She was a Republican state legislator in California.

[3] She served in the legislature from the 79th district in San Diego, from 1942 to 1954.

[4] She had a son.

[5]