"算命先生" in English is commonly translated as "fortune teller." This term refers to a person who claims to predict future events or provide insights into a person's life and destiny through various methods, such as reading palms, interpreting dreams, or using tools like tarot cards or the I Ching. The role of a fortune teller can vary across cultures, but they are often seen as individuals with special knowledge or abilities to foresee or influence future outcomes.