Barney's Big Adventure (also known as Barney's Marvellous Adventure in the UK and Australia) is a 1998 PBS Kids musical adventure television film based on the children's television series Barney & Friends. The film originally aired on "PBS Kids" in April 3, 1998. The film was later released on VHS in September 1, 1998 by Lyrick Studios and PolyGram Television.
A trip to Imagination Farm in Grand Prairie, Texas turns into an incredible journey as Barney™, Baby Bop™, BJ™ and their new friends - Cody (played by Trevor Morgan), Janie (played by Ashley Olsen) and Marcella (Mary-Kate Olsen) look high and low for a magic egg that's about to hatch something very special.
- Barney (Voice: Bob West, Costume: Josh Martin)
- Baby Bop (Voice: Julie Johnson, Costume: Jennifer Romano)
- BJ (Voice: Patty Wirtz, Costume: Jeff Brooks)
- Cody (Trevor Morgan)
- Janie (Ashley Olsen)
- Marcella (Mary-Kate Olsen)
- Mrs. Mildred Goldfinch (Andrea Martin)
- Mr. Millet (Rock Jutras)
- The Collector (Steffen Foster)
- Chip (Lucien Douglas) (Home Video Version Only)
- Kristen (Sara Hickman) (Home Video Version Only)
- Hannah (Marisa Kuers) (Home Video Version Only)
- Kristen's Mom (Lisa Ann Walter) (Home Video Version Only)
- Barney - The Song - sung by Bernadette Peters
- Let Me Call You Sweetheart
- Twinkle Twinkle Little Star
- Old MacDonald Had a Farm
- If You're Happy, If You Know It
- Who's Inside It?
- If All the Raindrops
- We're Gonna Find a Way
- I Love You