Who is third in line to the throne of the UK?

The third in line to the throne of the UK is Prince George. As the firstborn son of the Duke and Duchess of Cambridge, he follows his father, Prince William, who is second in line, and his grandfather, King Charles III. The line of succession is determined by a combination of birth order and parliamentary law, including the Succession to the Crown Act 2013, which ended the practice of male preference primogeniture.

In this context, while Princess Charlotte is also an important royal figure as she is the daughter of Prince William and second in line to the throne after her brother, she is not third in line. Therefore, understanding the order of succession based on birth order helps clarify why Prince George, as the eldest son, takes precedence.

As for Prince Louis, he is the younger sibling of Prince George and Princess Charlotte, so he follows them in the line of succession. Prince Harry, being the younger brother of Prince William, is further down the line after William's children, particularly following George and Charlotte.