SPP1 or SPP-1 may refer to:
- SPP-1 underwater pistol, a USSR firearm made for Soviet frogmen
- Secreted phosphoprotein 1, a human gene product
- Suppressor of Pericarp Pigmentation 1, a maize gene implied in the phlobaphene metabolic pathway
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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