Yes. In fact, wherever their location (EU and countries associated to Horizon 2020, or third countries), beneficiaries which become involved in a Horizon 2020 project will have to sign the grant agreement with the European Commission. Consequently, these beneficiaries will have the rights and obligations set forth in the grant agreement, in particular with regard to background and project results.
Furthermore, neither the Horizon 2020 Rules for Participation nor the model grant agreement make any distinction between project beneficiaries based on the country they are located in.
However, a distinction is sometimes made between beneficiaries which receive EU funding and beneficiaries which do not, regardless of their location. Indeed, a small number of obligations contained in the model grant agreement will not apply to beneficiaries which do not receive EU funding. For more information, please refer to the FAQ on this topic.