Tomomi Hayashi (林 知充, born February 1, 1971, in Toyama, Japan) is a Japanese-Estonian architect.
From 1995 to 1999 he studied in the Virginia Polytechnic Institute and State University, at the Washington-Alexandria Architecture Center (WAAC).
Most notable works of Tomomi Hayashi are the Lasnamäe track and field hall (2003), Museum of Occupations (2003), FOORUM department store (2007), the Rotermann's Old and New Flour Storage (reconstruction and extension of the Old Flour Storage in Rotermanni Quarter) (2009) as well as the renovation of Machinery Hall of the A. M. Lutheri Furniture Factory (2017).
HGA was involved with the Estonian National Museum project from 2008 till its completion as the collaborating local architects.
Tomomi Hayashi is a member of the Union of Estonian Architects and Chartered architect-expert VIII.