漢名
Joshua was the name given to him when he was baptised, and his father had wanted him to use that name when he entered an English school. But it was misspelled as Joshia. A teacher offered to fix the spelling for him, venturing a guess that the original intent was to use the name Josiah. As Lau confessed, the name Josiah has caused him inconvenience throughout his life, where many of his acquaintances would struggle to pronounce or spell his name properly, and resort to referring to him as K.K. (The initials of his Chinese given name). Yet, the name Josiah, as with his endorsement deals with electronic dictionaries, became associated with brand names, and so he was effectively stuck with it. As Lau himself pointed out, the name he was originally given, Joshua, is now the name given to his son.