0.05 thus there is no significant influence between cultures (X1) with the purchase decision Indomie brand of instant noodle products ( Y). Based on the analysis of partial test between social classes (X2) with the purchase decision Indomie brand of instant noodle products (Y) are known to sig = 0.160> 0.05 thus there is no significant effect between social class (X2) with the purchase decision brand of instant noodle products Indomie (Y). Based on the analysis of partial test of knowledge (X3) with the purchase decision Indomie brand of instant noodle products (Y) are known to sig = 0.275> 0.05 so that there is significant influence between knowledge (X3) with the purchase decision Indomie brand of instant noodle products (Y .) Based on the analysis of partial test of personality (X4) with the purchase decision Indomie brand of instant noodle products (Y) sig .05 = 0.05 so there is no significant influence between personality (X4) with the purchase decision Indomie brand of instant noodle products ( Y). Based on the results of F test is known sign value = 0.000 " />