Annie Kennedy Bidwell (June 30, 1839 – March 9, 1918) was a 19th-century pioneer and founder of society in the Sacramento Valley area of California.

She is known for her contributions to social causes, such as women's suffrage, the temperance movement, donating parks for travelers to camp and sleep in and education.

[2] she was the daughter of Joseph C. G. Kennedy,[1] a politician in the Whig party, who served as director of the United States Census for 1850 and 1860.

An amateur botanist, she collected the first known specimen of a small annual plant, which was named Bidwell's knotweed (Polygonum bidwelliae), after her.

Before her death, she donated to the city of Chico on July 10, 1905, some 2,238 acres (almost ten square miles) of land,[6] along with a Children's Park in downtown.