- Birth: 1551
- Death: 1613
- Distinction: Tokugawa retainer
- Title: Harima no kami
- Sons: Aoyama Tadayoshi, Aoyama Yukinari, and Aoyama Yasushige
Tadanari was the eldest son of Aoyama Tadakado and succeeded his father around 1570. He accompanied Tokugawa Hidetada while the latter was a youth. Following the Sekigahara Campaign (1600) Tadanari was made a daimyô in Musashi province. His son Tadayoshi was to fall out of favor with shôgun Tokugawa Iemitsu, though the family's name would be restored during the time of Tadanari's grandson, Munetoshi.