Who was King Henry VIII's second wife?

Yes. King Henry VIII married Ann of Cleves January 6, 1540, but then divorced her on the 6th of July. He continued to give her money until she died.

For a description of Ann's English life go to http://www.luminarium.org/encyclopedia/anneofcleves.htm

The marriage between Henry VIII and Anne of Cleves was annulled on 9 July 1540, on the grounds of non-consummation and also that she had been promised in marriage previously to Francis of Lorraine.

Henry VIII was disappointed when he first saw Anne, complaining that he had been told she was fair when she was not. He called her the Flanders Mare, and refused to consummate the marriage. But at least Anne received a good settlement, which included Richmond Palace and Hever Castle (Anne Boleyn's old family home).
- Anne of Cleves 22.09.1515-28.07.1557, married 1540, divorced in July 1540. Her Holbein portrait painting that Henry had ordered and the advice of Lord Chancellor Thomas Cromwell made him decide to marry Anne. Upon her arrival in London he found her not attractive and soon after their marriage and a couple of sexual failures in bed he started the divorce procedure and ordered the execution of Thomas Cromwell. Anne feared to be killed by her brothers if sent back to Cleves and stayed in England for the rest of her life always being a well received "sisterly" guest at court.

Christoph