How many different cards does American express have?

Here is 31 of them I know for sure American Express® Preferred Rewards Gold Card

American Express® Preferred Rewards Green Card

Bank of America Accelerated Rewards™ American Express® Card

Blue Cash® for Business Credit Card

Blue Cash® from American Express®

Blue for Business® from American Express®

Blue from American Express®

Blue Sky® from American Express

Business Green Rewards Card from American Express

Clear from American Express®

Gold Delta SkyMiles® Business Credit Card

Gold Delta SkyMiles® Credit Card

Hilton HHonors® Platinum Credit Card

IN:CHICAGOSM from American Express

IN:LA® from American Express

IN:NYC® from American Express

JetBlue Card from American Express®

JetBlue® Business Card from American Express®

One from American Express®

Platinum Business Credit Card from American Express®

Platinum Business FreedomPassSM from American Express®

SimplyCash® Business Card from American Express®

Starwood Preferred Guest® Business Credit Card

Starwood Preferred Guest® Credit Card

The Gold Card from American Express OPEN (SM)

Bank of America® Accelerated Cash RewardsTM American Express® Card

Platinum Card®

Platinum Delta SkyMiles® Credit Card

True Earnings® Card from Costco and American Express

TrueEarnings® Business Card from Costco and American Express There is also the rumored American Express Black card http://www.creditimes.com/american-express.shtml