Masabumi Hosono (?? ??, Hosono Masabumi, 15 October 1870 – 14 March 1939) was a Japanese civil servant.
He was the only Japanese passenger on the RMS Titanic's disastrous maiden voyage.
He survived the ship's sinking on 15 April 1912 but found himself condemned and ostracised by the Japanese public, press, and government for his decision to save himself rather than go down with the ship.
Hosono's grandson is Haruomi Hosono, leading member of the Japanese band Yellow Magic Orchestra.