The husband of Queen Elizabeth II was Prince Philip, Duke of Edinburgh.

He was born Prince Philip of Greece and Denmark in 1921 and married the future Queen Elizabeth in 1947. When she became queen in 1952, he became her royal consort, but he was not titled “king”; instead, he held the titles Prince Philip and Duke of Edinburgh. He remained her consort for more than 70 years, making him the longest‑serving royal consort in British history, until his death in 2021.

If you were instead thinking of “the queen” as Queen Victoria, her husband was Prince Albert of Saxe‑Coburg and Gotha, who was given the title Prince Consort.