| Year | Title | Role | Notes |
| 1990 | Life Goes On | Camille | Episode: "It Ain't All It's Cracked Up to Be" |
| 1991 | Saved by the Bell | Cynthia | Uncredited; episode: "The Last Weekend" |
| Married... with Children | Girl | Episode: "Kelly Does Hollywood: Part 2" |
| Doogie Howser, M . | Alissa | Episode: "Doogstruck" |
| 1992 | Eerie, Indiana | Girl | Episode: "Reality Takes a Holiday" |
| Beverly Hills, 90210 | Robin McGill | Episode: "Wedding Bell Blues" |
| 1993 | The Ben Stiller Show | Sunbathing girl | Uncredited; episode: "At the Beach" |
| Seinfeld | Molly Dalrymple | Episode: "The Shoes" |
| Bodies of Evidence | Jennifer Ivey | Episode: "Eleven Grains of Sand" |
| In Living Color | n/a | Episode: "The Dirty Dozens" |
| Against the Grain | Jodi Collins | 2 episodes |
| 1994 | Burke's Law | Jennifer Taylor | Episode: "Who Killed the Beauty Queen?" |
| Lois & Clark: The New Adventures of Superman | Angela | Episode: "Season's Greedings" |
| 1995 | P . | Jess | Television film |
| One West Waikiki | Deirdre Mansfield | Episode: "Flowers of Evil" |
| High Tide | Alex | Episode: "One on One" |
| 1996 | Weird Science | Valerie | Episode: "Funhouse of Death" |
| Melrose Place | Brandi Carson | 3 episodes |
| In the Blink of an Eye | Tina Jacobs | Television film |
| Pier 66 | Colleen |
| 2000 | 919 Fifth Avenue | Cathy Damore |
| 2001 | Friends | Cassie Geller | Episode: "The One with Ross and Monica's Cousin" |
| Spin City | Jennifer Duncan | Recurring role; 5 episodes |
| 2003, 2011 | Two and a Half Men | Lisa | 2 episodes |
| 2003–2021 | Entertainment Tonight | Herself | Guest and co-host; 27 episodes |
| 2004 | I Do (But I Don't) | Lauren Candell | Television film |
| 2005 | Sex, Love & Secrets | Jolene Butler | Main role |
| 2006 | Secrets of a Small Town | Brenda Rhodes | Unsold television pilot |
| 2008–2009 | Denise Richards: It's Complicated | Herself | Main role |
| 2010–2011 | Blue Mountain State | Debra Simon | Main role |
| 2012 | Blue Lagoon: The Awakening | Barbara Robinson | Television film |
| Kickin' It | Leona | Episode: "Wedding Crashers" |
| 90210 | Gwen Thompson | Episode: "902–100" |
| 30 Rock | Herself | 2 episodes |
| 2012–2013 | Anger Management | Lori |
| 2013–2014 | Twisted | Karen Desai | Main role |
| 2014 | Fatal Acquittal | Nora Grant | Television film |
| 2015 2019–2020 2023–2024 2026 | The Real Housewives of Beverly Hills | Herself | Reality series; 44 episodes |
| 2015 | A Christmas Reunion | Amy | Television film; also co-producer |
| Significant Mother | Pepper Spinner | Episode: "Mixed Doubles" |
| Vanity | Marion Bellerose | Main role |
| 2016 | Rock in a Hard Place | Heather | Episode: "Pilot" |
| Jane the Virgin | Denise Richards | Episode: "Chapter Fifty-One" |
| 2017 | Girlfriends' Guide to Divorce | Temple Hampton | Episode: "Rule : The Cat Is Always on the Roof" |
| A Girl Is A Gun | Nenuphar McBride | Streaming miniseries |
| Tomboy | Shelley | Television film |
| 2018 | Christmas Break-In | Heather |
| Alone Together | Jackie | Episode: "Fertility" |
| 2019 | The Secret Lives of Cheerleaders | Candice Scott | Television film |
