Giyar California tana nufin ruwan inabi da ake samarwa a jihar California ta Amurka. California tana ɗaya daga cikin manyan wuraren ruwan inabi a duniya kuma an san shi da samar da ingantattun giya waɗanda ake jin daɗin gida da waje. Yanayin ƙasa daban-daban, yanayi, da nau'in ƙasa suna ba da izinin noman inabi iri-iri, gami da Chardonnay, Cabernet Sauvignon, Pinot Noir, da Zinfandel. An san ruwan inabi na California a matsayin samfur mai ƙima kuma masu sha'awar giya a duniya suna girmama su sosai.