Mark Leonard & family

Mark Leonard & family (#1427)

Global Rank #1427

Country Rank #43

Country Canada

Mark Leonard & family is listed among the world billionaires tracked by Iconic Billionaires.

$ 3 B
Software
Canada
M
70 Years

Snapshot

Quick Facts

Global Rank #1,427

Country Rank #43

Net Worth $3.0B

Previous Worth $3.0B

Worth Change +$0.0B

Country Canada

Industry Software

Age 70 Years

Gender M

Worth As Of May 4, 2026

Residence Toronto, Canada

Citizenship Canada

World Billionaires List Canada Billionaires Software

Profile Data

Personal Stats

Age 69

Source Of Wealth Software, Self Made

Residence Toronto, Canada

Citizenship Canada

Education Master of Business Administration, The University of Western Ontario - Richard Ivey School of Business; Bachelor of Arts/Science, University of Guelph

Net Worth Change +$0.0B +0.0% from previous worth

Previous Net Worth $3.0B

Current Net Worth $3.0B

Worth as of May 4, 2026

About Me

Mark Leonard founded Canadian tech company Constellation Software in 1995. Constellation Software, also known as CSI, acquires, manages and builds software businesses. Leonard and members of his family own an estimated 7% of the company, which is listed on the Toronto Stock Exchange. He was Constellation's president until stepping down in October 2025. He remains on the board. After getting an MBA from the University of Western Ontario, Leonard worked in venture capital for 11 years.

Achievements

Forbes List Highlights

A snapshot of the list placements and rankings connected to Mark Leonard & family.

#1440

Billionaires (2026)

Insights

Did You Know?

There are few known photos of the elusive billionaire, who has never talked to the press.

According to Canada's Globe and Mail, Leonard worked "as a banker, valuator, mason, gravedigger, dog handler, bouncer, sapper, and wind energy researcher."

Wealth Growth

Net Worth Growth Over Time

Tracking Mark Leonard & family's net worth journey over the years, highlighting key growth phases and financial milestones.

Worth Trend Net Worth Growth

Period Change Worth Movement

Current Net Worth: $3.0B (May 4, 2026)