According to E! News, the gossip blogger will be a judge for the Chicago Nationals competition featuring stars Lea Michele, Cory Monteith and Naya Rivera.
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He joins actress Lindsay Lohan, who began filming scenes this week and will also be playing herself on the programme.
Rex Lee, known for his role as Ari Gold's assistant on Entourage, is also due to make a guest appearance.
This is not Hilton's first time playing himself on a network TV show. The 34-year-old blogger made an appearance on an episode of 90210 last year.
The season finale of Glee airs on May 22 on Fox in the US. It will be broadcast on May 31 on Sky1 in the UK.
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Watch Matt Bomer performing 'Somebody That I Used To Know' by Gotye and Kimbra on Glee below: