Forgotten since its peak of 530 births in 1946, the name Jack is quietly resurfacing in French maternity wards. Once a common name in the 1940s, it has since become rare in France, with its average age today reaching around 67 years—mainly associated with grandfathers. However, recent data shows a growing interest in this short, Anglophone name among new parents. According to the French National Institute for Statistics and Economic Studies (Insee), Jack is making a comeback, despite being considered somewhat outdated in France. It remains uncommon there, though it is among the most popular male names in the United Kingdom. In Ireland, Jack even reached the top of the male name rankings in 2024, according to the Irish Central Statistics Office. Though Jack often brings to mind post-war generations, the numbers tell a different story. In 1946, 530 babies were named Jack, but the number dropped significantly in the following decades. The average age of bearers now being 67 years suggests that the original generation has aged, creating space for a new wave of *Jack*s without overlapping with the names of parents. This resurgence aligns with a broader trend of retro names that are short and easy to pronounce. Names like Louis, Paul, or Léon have also seen renewed interest. Jack checks several boxes that appeal to modern parents: it has only four letters, a straightforward pronunciation, and an international flair that can be practical for families who travel or live abroad.