Prince Henry Victor Louis Frederick of Prussia (German: Heinrich Viktor Ludwig Friedrich; 9 January 1900 – 26 February 1904), was the third son and youngest child of Prince Henry of Prussia and Princess Irene of Hesse and by Rhine.

He was a grandson of Frederick III, German Emperor, through his father and a great-grandson of Queen Victoria.

His father was pleased by the birth of yet another son, especially such a handsome one, as the Prince had blonde hair.

[citation needed] The newborn Prince immediately received the title Prince of Prussia with the style Royal Highness, and was baptised Heinrich Viktor Ludwig Friedrich in Kiel Castle on 15 March 1900.

The Prince was diagnosed with haemophilia as a young child, but, despite this, was a very cheerful and lively boy who liked to play a lot.