- 五十四 wǔshísì fifty-fourthe number fifty-four
- 五十铃 wǔshílíng IsuzuIsuzu, a Japanese automotive brand
- 五十二 wǔshí'èr fifty-twothe number fifty-two
- 五十三 wǔshísān fifty-threethe number fifty-three
- 五十五 wǔshíwǔ fifty-fivethe number fifty-five
- 五十步笑百步 wǔshíbùxiàobǎibù the pot calling the kettle blackLiteral meaning: one who retreated 50 steps laughs at one who retreated 100 steps. Figurative meaning: to mock someone for the same faults or mistakes that one has oneself, even if to a slightly lesser degree.
- 山本五十六 shānběnwǔshíliù Yamamoto IsorokuYamamoto Isoroku (1884–1943), a prominent Japanese admiral during World War II
- 五十八 wǔshíbā fifty-eightthe number fifty-eight
- 五十九 wǔshíjiǔ fifty-ninethe number fifty-nine
- 各打五十大板 gèdǎwǔshídàbǎn to blame both partieslit. to give each person fifty strokes of a paddle; used to describe punishing both sides of a dispute equally, regardless of who is actually at fault or the rights and wrongs of the situation
- 五十七 wǔshíqī fifty-seventhe number fifty-seven
- 五十肩 wǔshíjiān frozen shouldera medical condition involving pain and stiffness in the shoulder joint, typically occurring in middle age; adhesive capsulitis
- 五十而知天命 wǔshí'érzhītiānmìng at fifty one knows destinyat the age of fifty one understands the mandate of heaven, a quotation from the Analects of Confucius describing the progression of wisdom with age
