* The Wright Brothers: Their first successful flight at Kitty Hawk, North Carolina, on December 17, 1903, catapulted them to international fame, making them pioneers of aviation.
* Henry Ford: Ford founded the Ford Motor Company in 1903, launching a revolution in car manufacturing and transportation.
* Jack Johnson: Johnson became the first African-American heavyweight boxing champion in 1903, breaking racial barriers in sports and drawing both praise and controversy.
* Marie Curie: Curie and her husband, Pierre, were awarded the Nobel Prize in Physics in 1903 for their work on radioactivity, solidifying their position as leading scientists.
There are many other individuals who achieved significant accomplishments in 1903, from artists and writers to inventors and politicians. Their fame might have been local or niche, but it's impossible to create an exhaustive list without knowing what specific field of fame you're interested in.