High-tech entrepreneurs bring new products or services to the market by combining technological innovation, new business ideas and an effective strategy. Imagination is needed for both creating business ideas as well as developing effective strategies. Three types of imagination can be distinguished: prospective thinking, counterfactual thinking, and perspective taking. The aim of this paper is to research how high-tech entrepreneurs use their imagination. Our contribution is twofold. First, we explore how high-tech entrepreneurs perceive in what way they use imagination. Second, we investigate how these entrepreneurs use the three imagination types to create new business ideas and develop strategies.