The most reliable way to watch the film with integrated English subtitles is through these platforms:
Since the movie's dialogue is highly philosophical and poetic, reading the script can provide deeper context: Hiroshima Mon Amour subtitles English
You can find English subtitles and the full script for Hiroshima Mon Amour (1959) through several official streaming platforms, digital archives, and published editions. Streaming with English Subtitles The most reliable way to watch the film