Wu Lei (simplified Chinese: 吴磊, born December 26, 1999), also known as Leo Wu, is a Chinese actor. He first appeared in numerous commercials starting in 2002 and officially began his career by starring in the drama series "The Legend and the Hero" in 2005. Since then, he has been called "China's Little Brother" thanks to his diverse roles since childhood.

In 2018, he ranked first nationwide on the entrance exams for the Beijing Film Academy. He is known for films and drama series such as "Adoration" (2019), "Cross Fire" (2020), "The Long Ballad" (2021), "Our Times" (2021), "The Coming Summer" (2021), "Love Like the Galaxy" (2022), and "Nothing But You" (2023).