Simon Ellis may refer to:

• Simon Ellis (record producer), producer and musical director
• Simon Ellis (film director), British film director

• Lewis and Clark Expedition
• Lewis and Clark expedition
• Lewis and Clark National and State Historical Parks
• Lewis and Clark National Forest
• Lewis and Clark National Historic Park
• Lewis and Clark National Historic Trail
• Lewis and Clark National Park
• Lewis and Clark Park
• Lewis and Clark River
• Lewis and Clark Village, Missouri
• Lewis and Clark Village, MO
• Lewis and Short
• Lewis A. Pick
• Lewis Armistead
• Lewis Ashfield Kimberly
• Lewis A. Swift
• Lewis Baboon
• Lewis Baltz
• Lewis base
• Lewis Baxter Schwellenbach
• Lewisberry, PA
• Lewisberry, Pennsylvania
• Lewis B. Hershey
• Lewis Binford
• Lewis Black