Lorena Siminovich (born in Buenos Aires) is a San Francisco based artist, designer, and illustrator. With a background in graphic design and an extensive career as an art director, she became interested in design for children in 2001 when she moved from Buenos Aires to New York. During this time, she was responsible for art direction and product development at Mudpuppy, an award winning company that manufactures puzzles and toys for kids, whose products can be found in museum stores across the country. Soon thereafter, she began her illustration career and relocated to San Francisco. Lorena has written and illustrated several children's books.

Her artwork has been licensed for stationery, wall decor, and dinnerware. Her clients include Anthropologie, Pottery Barn Kids, The Art Group, Habitat UK, Galison, Mudpuppy, Chronicle Books, and Crocodile Creek.