Tagaki Yoshin-ryū

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| nationality = Traditional Japanese martial art

| school = Takagi Yoshin-ryū

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| art1 = Jujutsu

| description1 = Hybrid art, unarmed or with minor weapons

| art2 = Bōjutsu

| description2 = Staff art

| art3 = Kenjutsu

| description3 = Sword art

| art4 = Iaijutsu

| description4 = Sword drawing art

| art5 = Naginatajutsu

| description5 = Glaive art

| art6 = Tessenjutsu

| description6 = Iron fan art

| art7 = Hojōjutsu

| description7 = Rope-tying and restraining art

| art8 = Sakkatsuhō

| description8 = Resuscitation methods

| ancestors = Takenouchi-ryū, Kukishin-ryū

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Takagi Yoshin-ryū ("Takagi Heart of the Willow School") is a school of Japanese martial arts. It was founded by Ito Sukesada, based on techniques that he learned from an ascetic named So Unryu. He taught this system to a samurai named Takagi Oriuemon Shingenobu, and Takagi's name was added to the school's.{{cite book|author1=Remigiusz Borda|author2=Marian Winiecki|title=The Illustrated Ninja Handbook: Hidden Techniques of Ninjutsu|url=https://books.google.com/books?id=x9HZAwAAQBAJ&pg=PT48|date=18 March 2014|publisher=Tuttle Publishing|isbn=978-1-4629-1426-5|pages=48–49}} Takagi was already a teacher of jutaijutsu, an unarmed grappling system similar to the Chinese art of taijiquan.{{cite book|author=Glenn Morris|title=Shadow Strategies of an American Ninja Master|url=https://books.google.com/books?id=jfDPtD4dUoUC&pg=PA12|date=31 March 1995|publisher=Frog Books|isbn=978-1-883319-29-8|pages=12–13}} He was recognised as a shihan by Emperor Higashiyama in 1695.

The Takagi-ryū was influenced by other arts, particularly Takenouchi-ryū and Kukishin-ryū. A match between the headmasters of the Takagi and Kukishin styles in the 17th century led to further cross-training between the two schools.