https://www.imdb.com/name/nm0075706/?ref_=nv_sr_srsg_0

Silvio Berlusconi

FYC:

Mexican National Team star Cuauhtémoc Blanco had a unremarkable attempt at acting in a soap opera and later he jumped to politics.

Currently he is the (in my opinion terrible) governor of a Mexican state called Morelos.

Comedian Jimmy Morales was president of Guatemala between 2016 and 2020.

While she was first lady, the influence of Eva Perón in Argentina's politics was huge, she also started as an actress.

Also in Argentina, musician Palito Ortega was governor of Tucumán province.

@Peter,

For your consideration:

Grace Kelly

https://www.imdb.com/name/nm0000038/bio

Married Prince Rainier of Monaco  to become Princess Grace of Monaco

https://en.wikipedia.org/wiki/Grace_Kelly

Grace Patricia Kelly (November 12, 1929 – September 14, 1982) was an American actress who, after starring in several significant films in the early to mid-1950s, became Princess of Monaco by marrying Prince Rainier III in April 1956.

... Kelly retired from acting at age 26 to marry Rainier, and began her duties as Princess of Monaco. ...

... The Napoleonic Code of Monaco and the laws of the Catholic Church necessitated two ceremonies, civil and religious.[63] The 16-minute civil ceremony took place in the Palace Throne Room of Monaco on April 18, 1956,[63] and a reception later in the day was attended by 3,000 Monégasque citizens.[64][65] The 142 official titles that she acquired in the union (counterparts of her husband's) were formally recited. ...

@Peter,

For your consideration:

Pope John Paul II

https://www.imdb.com/name/nm0937552/bio

Pope John Paul II was born on May 18, 1920 in Wadowice, Malopolskie, Poland. He was a writer, known for The Jeweller's Shop (1988), Teatr Polskiego Radia (1925) and Television Theater (1953). He died on April 2, 2005 in Vatican City.

Died three days before the death of Prince Rainier of Monaco. Monaco is the second smallest independent nation in the world. Pope John Paul II was the ruler of the Vatican City, the world's smallest independent nation.

https://en.wikipedia.org/wiki/Pope_John_Paul_II

Pope John Paul II (Latin: Ioannes Paulus II; Italian: Giovanni Paolo II; Polish: Jan Paweł II; born Karol Józef Wojtyła [ˈkarɔl ˈjuzɛv vɔjˈtɨwa];[a] 18 May 1920 – 2 April 2005) was the head of the Catholic Church and sovereign of the Vatican City State from 1978 until his death in 2005.

https://en.wikipedia.org/wiki/Pope_John_Paul_II#Early_life

While studying such topics as philology and various languages, he worked as a volunteer librarian and though required to participate in compulsory military training in the Academic Legion, he refused to fire a weapon. He performed with various theatrical groups and worked as a playwright.[38]

38 Kuhiwczak, Piotr (1 January 2007). "A Literary Pope". Polish Radio. Retrieved 1 May 2011.

Maybe Prince Albert of Monaco could be included as a Bobsledder, he participated in all Olympics with Monaco's Bobsleigh team until he took over the throne of his country.

Live Poll

https://www.imdb.com/poll/KII3aWmhc18/