Scrub brush or scrubbrush may refer to:

• Shrubland, an environmental habitat characterized by vegetation dominated by shrubs
• Silkworm (missile), a missile with the NATO reporting name "Scrubbrush"
• Tawashi, a Japanese traditional scrubbing brush
• Toilet brush, a scrubbing brush for cleaning toilets
• Investment, a security or asset expected to increase in value over time.