Princess Margarita of Baden (Margarete Alice Thyra Viktoria Marie Louise Scholastica; 14 July 1932 – 15 January 2013) was the only daughter of Berthold, Margrave of Baden, and Princess Theodora of Greece and Denmark. She was the eldest niece of Prince Philip, Duke of Edinburgh. She was the first great-great-great-grandchild of Queen Victoria.

Princess Margarita was born at Schloss Salem, Germany on 14 July 1932 and grew up there. Her father ran a school jointly with Kurt Hahn.

She came to live in London in 1948, and trained as a nurse at St Thomas' Hospital. She attended the 1953 Coronation of Queen Elizabeth II. While in London, she met Prince Tomislav, a member of the exiled Yugoslav royal family.

On 5 June 1957, Princess Margarita married Prince Tomislav of Yugoslavia, younger brother of the former King Peter II of Yugoslavia, in a civil ceremony in Salem followed by Lutheran and Serbian Orthodox church services on June 6. Prince Philip, Duke of Edinburgh (her maternal uncle) and King Simeon of Bulgaria were among the guests. From this marriage were born:

The couple settled in the United Kingdom, running a fruit farm near Billingshurst in Sussex. They were divorced in 1981.