Lutah Maria Riggs FAIA (October 31, 1896 – March 8, 1984) was an American architect who worked for several decades in Santa Barbara, California.

Born in Toledo, Ohio, she moved with her mother to Santa Barbara after high school, where she returned after receiving a BA in architecture from the University of California, Berkeley.

She contributed significantly to the designs for some of Smith's most well-known buildings, including the Lobero Theatre, El Paseo historical complex, and Casa del Herrero.

She also designed modest residences for the Rolling Hills development on the Palos Verdes peninsula south of Los Angeles.

[3] In 1946 Riggs began a partnership with Arvin Shaw, continuing to focus on residential work, though in a more modernist style, as seen in her design for the Alice Erving house in Montecito (1951).

The Erving house is well known for its unique siting that maintains privacy while opening up to expansive views of the surrounding mountains, as well as for its floor-to-ceiling windows and vaulted ceilings.

[7] In addition to running her practice, Riggs was active in her local AIA chapter, and served on the California Architects' Board as both a member and a commissioner.