You can apply online for a Citibank credit card at CitiCards.com. You can view the available credit cards sorted into specific categories, such as business cards, student cards and travel cards, and once you have selected your preferred card, you can begin the application process.
When applying for a credit card at CitiCards.com, you must provide your name, contact information, date of birth, Social Security number, financial information and authorized users. You must also agree to the electronic disclosure and choose a security word. Citibank then evaluates your credit history and other information and provides a response within four weeks of submission, according to the company's website.