The crossword solution for the term 'Visa Competitor, For Short' is 'AMEX', which stands for American Express. American Express is a financial services corporation that was founded in 1850 and is one of the 30 components of the Dow Jones Industrial Average. It is best known for its charge card, credit card, and traveler's cheque businesses. American Express is a major competitor to Visa, and is accepted at millions of locations worldwide.