Maeda Harunaga (前田 治脩, February 4, 1745 – February 10, 1810) was an Edo period Japanese samurai, and the 10th daimyō of Kaga Domain in the Hokuriku region of Japan.
Harunaga was born in Kanazawa as Tokijiro (時次郎), the tenth son of Maeda Yoshinori.
His mother was a concubine and he was initially destined for the Jōdo Shinshū priesthood, and was ordained as a priest at the temple of Shōkō-ji in Toyama in 1746; however, with so many of his brothers dying untimely deaths during the O-Ie Sōdō known as the “Kaga Sōdō” he returned to secular life in 1768 under the name of Maeda Toshiari (利有).
In 1792, he established the Kaga Domain's han school, Meirin-dō, and is also noted for restoring the famed Kenroku-en gardens.
Shigemichi had a son, Maeda Naritaka, after he retired, whom Harunaga adopted in 1791; however, he died in 1795.