Surname Rappu (Rappu 
, Trappa 
) , throughout the world, is a rare last name. The family name Rappu is characteristic of Estonia, where it is quite a rare surname, Finland, where it is a rare surname, and Bolivia. Measured by absolute frequency, it is commonest in Finland, Italy, and India. Also, Rappu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rappu | India, Estonia, Bolivia, Sweden, Finland |
| Trappa | Argentina, India, Tunisia, United States, Italy |
| martti rappu (born 1963) (b. 1963) |
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| pekka rappu researcher |
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| patrick martin conradin rappu (born 1987) (b. 1987) |
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| richard valdemar rappu (born 1989) (b. 1989) |
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| fredrik carl anton rappu (born 1990) (b. 1990) |
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