Splendid Days (Russian: Серёжа, romanized: Seryozha) is a 1960 Soviet comedy-drama film directed by Georgiy Daneliya and Igor Talankin.

Newly born little brother Lyonya diverts all of mother's attention and worries towards himself, and Seryozha begins to feel lonely and abandoned.

In addition, his parents who are moving to another city where his father has found a new place of work, are going to leave Seryozha with a neighbor because of the boy's ill throat.

The script was personally written by Igor Talankin, and Georgiy Danelia made a storyboard for him; he drew 505 frames of the future film.

Since the action of the picture takes place in the summer, it was decided to build the set in Krasnodar, where autumn has a large number of sunny days.