Viza is a brand of credit card featured in The Simpsons TV show. Ned Flanders and his 10 years old son Rod owns one, although the credit cards are seen on screen in hands of Homer and Bart (EPISODE "Catch'em If You Can").
The brand was first mentioned when Bart purchases a "genuine Itchy and Scratchy animation cel" (EPISODE "Lady Bouvier's Lover"). In following episodes, the brand reappear as a common company in the Simpsons universe.
Viza is based on Visa , an American financial services corporation.