Meerkerk Rhododendron Gardens (53 acres) are nonprofit gardens located at 3531 Meerkerk Lane, Greenbank, Washington. They are open daily; admission is $5.00

The gardens were founded by Ann and Max Meerkerk in the early 1960s on 13 acres (53,000 m²), and served as a site where they collected and hybridized rhododendrons. They gradually expanded the garden to 10 acres (40,000 m²) of rhododendrons surrounded by an additional 43 acres (170,000 m²) of woodlands. Ann Meerkerk left the gardens to the Seattle Rhododendron Society in 1979.

Today the garden features more than 1,500 varieties of rhododendron species and hybrids.