Semyon Treskunov as Мишка Хрусталёв

Egor Klinaev as Димка Терентьев

Anfisa Vistingauzen as Ленка Карасёва

Ilya Ermolov as Костик, пионервожатый старшего отряда

Ekaterina Kuznetsova as Алла Сергеевна, медсестра

Vasiliy Mishchenko as Сан Саныч Заславский, начальник пионерского лагеря «Юность»

Timofey Tribuntsev as Олег Витюшкин, капитан милиции

Sergey Batalov as Виктор Петрович, баянист

Aleksandra Rtishcheva as Лариса

Sofiko Kvirkvelia as Нина

Mark Leschinsky as Калач

Anna Budanova as старшая вожатая

Anna Anosova as

Karina Bayzhanova as

Nikita Bedrin as

Elizaveta Borzunova as

Demid Borisov as

Ivan Bred as

Alexandra Vinogradova as

Valeriya Juravleva as

Ivan Zhuraev as

Mikhail Zanadvorov as Игнат

Elizaveta Zaporozhets as Лиза

Dmitriy Kalanchin as

Kristina Kurbanova as старшая пионервожатая

Georgiy Kuzminov as

Sofya Savchuk as

Alina Syromyatnikova as

Alexandr Karpilovsky as голос за кадром, озвучка, в титрах не указан

Marianna Shults as Жанна Борисовна, педагог старшего отряда