Kurtis David Harder
- Birthday: 1992-04-28
- Place of birth: Calgary, Alberta, Canada
- Also know as: カーティス・デビッド・ハーダー
Kurtis David Harder (born April 28, 1992) is a Canadian filmmaker and one half of the directing duo Lankyboy with Noah Kentis. He is best known for directing the horror films Spiral (2019), Influencer (2022) and Influencers (2025).
