Martin O'Neill (the football manager and former player) was born on March 1, 1952, making him 73 years old as of today. Context notes:

• Different sources consistently list his birthdate as 1 March 1952 and place of birth as Kilrea, Northern Ireland.

• This age is calculated from the current date (October 28, 2025) minus his birth year, accounting for whether his birthday has occurred yet in the year (his birthday in March has passed this year).

Key details:

• Full name: Martin Hugh Michael O'Neill.

• Nationality: Northern Irish.

• Notable roles: former professional footballer, later manager of several clubs and national teams, including Celtic and the Republic of Ireland national team.

If you’d like, I can provide a quick timeline of his playing and managerial career or verify the age against a specific source.