The former Conservative leader will instead become leader of the House of Commons and provide political advice to prime minister David Cameron until the end of this parliament.
Hague will not seek re-election to his Richmond constituency, which he has represented since the age of 28.
David Cameron said Hague would still play a key role in the government.
- 26 people, thought to be refugees and migrants, were discovered in the back of a truck in Austria. ›
- Thai police arrested a man alleged to have explosives in his possession, almost two weeks after a deadly bomb blast in Bangkok killed 20 people. ›
- Oliver Sacks, the famed neurologist and author, died Sunday from cancer. He was 82. ›