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Kathleen Elizabeth Hilton (née Avanzino; born March 13, 1959) is an American socialite, fashion designer, actress, and television personality. She is the mother of socialite Paris Hilton and fashion designer Nicky Hilton and the half-sister of The Real Housewives of Beverly Hills stars Kim Richards and Kyle Richards. Since 2011, Hilton has also appeared on that series in regular guest and recurring appearances.
| Year | Title | Role | Notes |
| 1970 | Nanny and the Professor | Melodie | Episode: "The Philosopher's Stone" |
| 1971 | Family Affair | Carol | Episode: "The Joiners" |
| Marcus Welby, M . | Nicole | Episode: "A Portrait of Debbie" | |
| Bewitched | Robin Silverton | Episode: "TV or Not TV" | |
| 1972 | Welcome Home, Johnny Bristol | Virginia | Television film; uncredited |
| 1974 | Sigmund and the Sea Monsters | Diane | Episode: "One Way Whammy to Tahiti" |
| 1976 | No Deposit, No Return | Girl at the Airport | Film; uncredited |
| 1977 | Happy Days | Gertie | Episode: "Fonzie, Rock Entrepreneur: Part 1" |
| The Car | Girl Marching with Flag | Film; uncredited | |
| 1978 | The Rockford Files | Judy | Episode: "The Prisoner of Rosemont Hall" |
| 1979 | The Dark | Shelly Warner | Film |
| On the Air Live with Captain Midnight | Corvette Girl | ||
| 1992 | Wishman | Woman at Football Game | Film; uncredited |
| 2020 | BSA Live | A star | Film |
| Year | Title | Role | Notes |
| 2003–2007 | The Simple Life | Herself | 6 episodes |
| 2005 | I Want to Be a Hilton | Host | |
| The Miss Teen USA Pageant | Judge | Television special | |
| 2008 | The Young and the Restless | Herself | Episodes: "Episode " and "Episode " |
| 2009 | Paris Hilton's British Best Friend | Episode: "Episode " | |
| 2011 | The World According to Paris | 4 episodes | |
| 2011–2015, 2020–present | The Real Housewives of Beverly Hills | 55 episodes; Guest (2011–2020, 2024), Friend of the housewives (seasons 11–12, 14–) | |
| 2013–14 | Life with La Toya | 9 episodes | |
| 2020 | This Is Paris | Documentary film | |
| 2021 | Cooking with Paris | Guest | |
| 2021–2023 | Paris in Love | Main Cast | |
| 2025 | Denise Richards & Her Wild Things | Episode: “Yes, Chef!” |