Paulus Roiha (born 3 August 1980) is a Finnish former professional footballer who played as a forward.
Roiha began his Veikkausliiga career in Finland with HJK Helsinki.
In September 2001 he scored twice for the club against Celtic in a UEFA Cup tie, which HJK eventually lost 3–2 on aggregate.
Roiha has since also played for Zwolle in the Netherlands and for Cercle Brugge in Belgium.
In 2010, Roiha joined newly promoted Allsvenskan club Åtvidabergs FF on a free transfer.