最終（さいしゅう） means final or last, especially in a planned schedule, series, or process.
It is more specific than 最後（さいご）, which is the general word for “the end” or “the last one.” Use 最終（さいしゅう） when something is the last step in an organized system.
Common in formal, business, technical, and transportation contexts:
• 最終電車（さいしゅうでんしゃ）: the last train of the day
• 最終面接（さいしゅうめんせつ）: final interview
• 最終確認（さいしゅうかくにん）: final check
Learner tip: 最後 feels broad and everyday. 最終 sounds more structured, like there is a timetable, procedure, or official sequence.