La Seine no Hoshi (ラ・セーヌの星, Ra Sēnu no Hoshi) is Japanese anime series by Soeisha (later renamed as Sunrise), which premiered in Japan on Fuji TV from April 4, 1975 and finished its run on December 26, 1975, spanning a total of 39 episodes. The title translates to English as "The Star of the Seine" or "The Seine's Star". It is based on Alain Delon's 1963 movie La Tulipe noire (which, in spite of the title, is based, in name only, on Alexandre Dumas, père's novel The Black Tulip).

It was created by Mitsuru Kaneko, and was directed by Masaaki Ōsumi (episodes 1-26) and Yoshiyuki Tomino (episodes 27-39). It was written by Sōji Yoshikawa, while the character designer was Akio Sugino. The music for the series was composed by Shunsuke Kikuchi.