Global Youth Service Day (GYSD) atau Hari Aksi Kerelawanan Remaja Sedunia adalah kegiatan internasional berkala tahunan di seluruh penjuru dunia, yang penyelenggaraannya di berbagai negara dikoordinasikan oleh kelembagaan representatif selaku koordinator nasional (Lead National Agency). Setiap Tahun, GYSD diikuti oleh jutaan remaja di sedikitnya 120 negara, dengan mendapatkan dukungan langsung ribuan lembaga nasional serta ratusan kelembagaan international, termasuk Perserikatan Bangsa-Bangsa. Inisiator sekaligus koordinator international GYSD adalah organisasi Youth Service America dan Global Youth Action Network.

Misi dan tujuan GYSD adalah: 1) Membangun kapasitas sekaligus memperkuat jaringan internasional dari organisasi-organisasi yang mempromosikan misi pembelajaran, kerelawanan dan partisipasi remaja; 2) Melakukan edukasi untuk publik, media serta para pengambil keputusan dalam hal pembukaan ruang ekspresi bagi remaja sebagai pemimpin komunitas di seluruh dunia; 3)Memobilisasi keterlibatan kaum remaja dan kelompok dewasa untuk memberikan layanan komunitas berdasarkan kerelawanan; serta 4)Mendorong proses pembelajaran sekaligus berbagi pengalaman kegiatan dalam hal kerelawanan remaja, perspektif remaja, serta persoalan kewargaan masa kini.

Lebih lanjut tentang GYSD-LMPI di Indonesia (LMPI sebagai National Lead Agencies) :

1. Local Organizer.
   - Downloadble Kit
   - List Local Organizer (Candidate & Approaved)
   
2. LMPI Confirmation Letter sebagai Koordinator Nasional Indonesia (Indonesia National Lead Agency).
3. Local Sponsor & Goverment Support.
4. Tanya-jawab seputar GYSD (Q&A GYSD)
   
5. LMPI di GYSD 2007.

'The United Nations can never succeed alone. Only by forming partnerships with governments, the private sector, and civil society around the world, can it change lives, save lives, strengthen democracy and human rights, and offer support, comfort, and protection to the poor, the sick, and the dispossessed. Volunteers are some of our most valued partners, and Global Youth Service Day celebrates the efforts of the youngest of them. These young people are not only the leaders of tomorrow; they can play a leading role in the development of their communities today. Let us hope that their good works today blossom into lifelong commitments that will benefit all the world's people.'

Kofi Annan,
Former Secretary-General,
United Nations

'Approaching the midpoint of the race to achieve the Millennium Development Goals, we need [young people's] participation more than ever. Their energy and idealism can help make up for lost ground and achieve our development goals in full and on time.'

Ban Ki-moon,
Secretary-General,
United Nations

'I have hope that stems in large part from my knowledge that the future of this planet lies in the tremendous energy, enthusiasm, and commitment of young people around the world. I have often said that every individual counts, every individual has a role to play, and every individual makes a difference. Global Youth Service Day proves it. Let us support this opportunity to move forward with hope -- with faith in ourselves and in our intellect. And let's celebrate the indomitable spirit of youth.'

Dr. Jane Goodall,DBE,
Founder,
The Jane Goodall Institute