Aya Kōda (幸田 文 Kōda Aya, September 1, 1904 - October 31, 1990) was a Japanese essayist and novelist. She was the second daughter of Meiji period novelist Kōda Rohan. Her daughter Aoki Tama and granddaughter Nao Aoki were also writers.
Kōda was born in Tokyo. At the age of five, she lost her mother, and later her younger sister and brother. She studied at the Tokyo Women's School Joshigakuin. She married at age 24, but divorced after 10 years and returned with her daughter, Tama, to live with her father. During World War II, she helped secure her father's job as described in Aoki Tama's Koishikawa no i.e. (小石川の家, The house in Koishikawa). Her first works, written when she was 43, were memoirs of life with her father; they include Chichi (父, My Father) and Konna koto (こんなこと, Such an affair). Seen as the writings of a dutiful daughter, they achieved critical success.
Her subsequent short stories, novels and essays, explored women's lives, family, and traditional culture. They include the 1955 novel Nagareru (Flowing), which was made into a popular movie, as well as essays such as Kakera (Fragments) and Mono Iwanu Issho no Tomo (A Friend for Life), and short stories including Hina (Dolls for a Special Day) and Kunsho (The Medal). She received the Yomiuri Prize for Kuroi suso.