Otoko wa Tsurai yo is a Japanese film series starring Kiyoshi Atsumi as Tora-san (寅さん), a kind-hearted vagabond who is always unlucky in love. The series itself is often referred to as "Tora-san" by its fans. Spanning 48 installments released between 1969 and 1995, all of the Otoko wa Tsurai yo films except episodes 3 and 4 were directed by Yōji Yamada, who also wrote all the screenplays.

Kiyoshi Atsumi, born Yasuo Tadokoro, was a Japanese actor. He was born in Tokyo suffering from childhood malnutrition due to conditions in wartime. The resulting illnesses led him to re-take 3rd and 4th grade to recover, listening to Musei Tokugawa and rakugo on the radio. In 1942 the outbreak of war with the US forced his middle school class into a factory producing radiators for the military. He later graduated in 1945 but his family home was destroyed during the Tokyo firebombing.