Raffael,
Joseph Raffaello,
Sanzio Reichlin,
Bruno Reinhart,
Fabio Renwick, James Revell, Viljo Richardson,
Henry Hobson
Ridolfi,
Mario Rietveld,
Gerrit Roche,
Kevin Rodia,
Simon Roebling,
John Augustus Rogers,
Ernesto Nathan
Rogers,
Richard Romano,
Giulio Root
and Burnham
Rossi,
Aldo Rubik,
Erno
Rudolph, Paul
Ryn,
Sim van der