Individuals with intellectual disability (ID) are less physically active than individuals without ID, and rarely reach the recommended daily level of physical activity (PA). It is understood that both social interaction and the ability to perform physical work affect participation in daily activity as well as PA. Individuals with ID generally have a higher risk of hypertension and obesity-related cardiovascular diseases than individuals without ID. Professional service providers, teachers and parents are often those being asked about potential challenges related to PA, as it is more seldom that this knowledge comes from the target group (ID) themselves. This identifies a lack of knowledge about PA and sports for individuals with ID. The aim of this study was to identify perceptions of, and motivation for, PA and sports among adolescents with ID. Twelve Swedish male and female adolescents with ID participated in the study, which comprised one semi-structured interview. The interviews identified three main categories: Activity, Surroundings and Body- and health awareness. Adolescents with ID seemed intrinsic motivated to participate in PA, organised sports and activities in general. Support from significant others, teachers, family and friends and support as well as the feeling of joy are connected to normative beliefs which all seem crucial. The participants were aware of their limitations, but sometimes feel bullied and afraid of being excluded, which relates to their normative beliefs. Participation in PA and organised sports may be positively associated with health, but limitations such as lack of awareness and support from society challenge the perception of ‘fitting in’. This research has raised the voice of adolescents with ID and identified the need for increased knowledge of their perceptions for a more inclusive world. School PE is an arena where adolescents can still be reached regarding PA and thereby should be prioritised.