A nickname for George H. W. Bush

Poppy, a song by TV on the Radio from their album Desperate Youth, Blood Thirsty Babes

Poppy Z. Brite, an American author

the opium poppy

Poppy plants:

The Poppy Family, Papaveraceae

Poppy Montgomery, an Australian actress

Poppy (musical), the Peter Nichols musical

The corn poppy

Poppy (satellite), a satellite system

Poppy, the supporting character from the Japanese videogame Dragon Quest Yangus

Poppy Sebag-Montefiore, a British journalist and author

The Poppy appeal, an annual charity appeal in the UK to raise money for the Royal British Legion

The White Poppy, a symbol of peace in the UK associated with the Peace Pledge Union