Jaan Tiidemann (born 21 August 1971 in Tallinn) is an Estonian architect.
Jaan Tiidemann studied in the Estonian Academy of Arts in the department of architecture.
He graduated from the academy in 1997.
From 1996 to 1999 Jaan Tiidemann worked in the Mai Shein Architectural Bureau.
From 1999 he works in the Jaan Tiidemann Architectural Bureau.
Most notable works by Jaan Tiidemann are the Golf Club of Tallinn in Niitvälja and the Veskimöldre kindergarten.
Jaan Tiidemann was one of the nominees of the 2008 Best Young Architect award.
Jaan Tiidemann is a member of the Union of Estonian Architects.