Cognomen Hirotada (Hirotada 
) , in the world, is a very rare last name. The family name Hirotada is habitual in Eastern Asia, particularly Japan, where it is a very rare surname, and China, where it is an extremely rare surname. Much more prevalently, Hirotada is the forename as well as the last name.
Abe, Kubota, Kimura, Tanaka, Takada, Toyama, Nakata, Ohashi, Yamada, Komatsu, Kimpara, Takizawa, Ikegami, Yoshida, Mizutani, Murakami, Takeuchi, Nakamura, Nakajima, Furukawa, Watanabe, Yoshioka, Kaneko, Suzuki, Shirai, Sasaki, Ida, Ito, Ono, Mori, Sano, Sato, Ando, Kato, Kono, Noda, Kobayashi, Endo, Hino, Wada, Miura, Saito, Sakai, Asazu, Kondo, Tsuda, Ishii, Okada, Hori, and Takahashi