Klein is a unisex given name of German origin, meaning 'small' or 'speckled'. It is derived from the Middle High German word 'kleine', which translates to 'little'. The name Klein gained popularity in the United States during the mid-20th century and has been used for both boys and girls. Notable individuals with this name include Kleinbard, a prominent American attorney and law professor.
The name Klein experienced a significant increase in popularity from the late 1980s onwards, with a notable spike in recent years, particularly since 2012. The most popular year for the name was 2023, with 16 births recorded. Overall, there were 339 babies named Klein between 1984 and 2023.