Given names

• Saint Mo Chua of Balla, also known as Crónán (mac Bécáin)
• Saint Crónán of Roscrea

Surnames

• Thomas Cronan
  Thomas Cronan
  Thomas Cronan was an American athlete who competed mainly in the triple jump....
  
  , American athlete
• Rich Cronin
  Rich Cronin
  Richard Burton "Rich" Cronin was an American singer and songwriter. He was the lead singer and primary songwriter for the pop group Lyte Funkie Ones or LFO.-Early life:...
  
  , American musician
• William P. Cronan
  William P. Cronan
  William Pigott Cronan was a United States Navy Captain who served as the 19th Naval Governor of Guam. During his tenure in the Navy, he became decorated, commanded a number of ships, and came to be known as "the most popular man in the Navy". He participated in the Battle of Santiago de Cuba...
  
  , Governor of Guam
• William S. Cronan
  William S. Cronan
  William S. Cronan was a boatswain's mate serving in the United States Navy during who received the Medal of Honor for bravery.-Biography:...
  
  , American Medal of Honor recipient