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Евгений Леонов as Semyon the postman (voice) |
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Nina Solomatina as Ksyusha / Ksyusha's older sister (voice) |
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Вячеслав Невинный as Fisherman (voice, uncredited) |
| Writing | Юрий Яковлев | Writer |
| Directing | Wladimir Pekar | Director |
| Sound | Евгений Крылатов | Original Music Composer |
| Art | Татьяна Колюшева | Art Direction |
| Camera | Кабул Расулов | Director of Photography |
| Sound | Борис Фильчиков | Sound Director |
| Visual Effects | Марина Рогова | Animation |
| Visual Effects | Natalja Bogomolowa | Animation |
| Visual Effects | Владимир Шевченко | Animation |
| Visual Effects | Виктор Лихачёв | Animation |
| Art | София Митрофанова | Storyboard Artist |
| Art | Сергей Маракасов | Storyboard Artist |
| Art | Ирина Светлица | Storyboard Artist |
| Art | Елена Танненберг | Storyboard Artist |
| Writing | Пётр Фролов | Script Editor |
| Directing | Лидия Никитина | Assistant Director |
| Art | Роза Бикмаева | Assistant Art Director |
| Camera | Людмила Крутовская | Assistant Camera |
| Editing | Наталия Степанцева | Editor |
| Production | Фёдор Иванов | Producer |
| Sound | Валентина Толкунова | Playback Singer |
