Iida Domain (飯田藩, Iida-han) was a feudal domain under the Tokugawa shogunate of Edo period Japan. It is located in Shinano Province, Honshū. The domain was centered at , located in what is now part of the town of Iida in Nagano Prefecture. It was also known as Shinano-Iida Domain (信濃飯田藩, Shinano-Iida-han).