Peter the Younger (Romanian: Petru cel Tânăr) (1547 – 19 August 1569) was the Voivode (Prince) of Wallachia between 25 September 1559 and 8 June 1568.

[1] The eldest son of Mircea the Shepherd and Doamna Chiajna, he was named "the Young" because, at the moment of crowning, he was only 13.

Because he was too young, the country was led by his capable mother Lady Chiajna, who was able to neutralize the intrigues of the pretenders to the throne and the manoeuvres of King of Hungary.

Attempting to secure the wealth of both the family and the state, the Ottoman Empire, through a representative, managed to send the young prince in exile along with his mother, Lady Chiajna in 1568.

On 19 August 1569, Peter the Younger died of poisoning in Konya in Asia Minor, he was only 21 years old.