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- A stereotypical parrot is often called Polly
- Polly (robot), an early vision-based mobile robot
- "Polly put the kettle on", nursery rhyme with Polly as the subject
- Polly Pocket, popular children's toy, mostly played with by young girls
- Polly (peanut), a Norwegian peanut snack brand
- Polly and Molly, two genetically engineered sheep
- PollyVote, a website that forecasts political elections
- Polly (candy), a chocolate candy made by the Finnish-Swedish candy company CloettaFazer AB
- "Polly Had A Dolly", nursery rhyme about Polly and her doll
- USS Polly (SP-690), a United States Navy patrol vessel in commission from 1917 to 1919
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