Leonardo Mongillo is the principal lawyer at Mongillo Law and has over 20 years of experience in family law. Leonardo was a student and then an associate lawyer with a downtown Toronto boutique family law firm from 1999 until 2015 when he opened his own practice. In particular, he assisted clients in high conflict divorce cases. He is certified to practice Collaborative Family Law and has proficiently represented clients through the Collaborative law process in the Greater Toronto Area.

Leonardo has a Specialized Honours Bachelor of Arts degree in Economics and Business from York University. His business acumen has assisted him in deciphering complicated financial arrangements and has provided a foundation to find solutions to the financial complexities of family law proceedings.
  • Toronto, Ontario, Canada
  • JoinedApril 7, 2023



Stories by Leonardo Mongillo - Lawyer, collaborative Family Law Lawyer, Notary Public
Leonardo Mongillo Law Provisioning for Nuptials: Family Law in Pre-Marital by leonardo-mongillo
Leonardo Mongillo Law Provisioning...
Getting married is one of the most significant decisions in a person's life. It's a joyous occasion that brin...
ranking #39 in family-lawyer-canada See all rankings
Leonardo Mongillo - Law Experts Transform Divorce from Messy to Collaborative by leonardo-mongillo
Leonardo Mongillo - Law Experts Tr...
Divorce can often be a messy and complicated process, filled with high emotions and potential for conflict. T...
ranking #3 in family-law-canada See all rankings
Mongillo Law Empathy and Compassion: The Twin Pillars of Family Law in Canada by leonardo-mongillo
Mongillo Law Empathy and Compassio...
In the intricate and emotionally charged world of family law, divorce cases often present the most challengin...
ranking #125 in empathetic See all rankings