Australian Food Sovereignty Alliance, the Africa Rice Center, EcoAgriculture Partners, Global Crop Diversity Trust and La Via Campesina? These are all listed in the Food Tank's 101 Organizations to Watch in 2014. The listing is the Bread for the World Institute (and the link is too), but the description is more for Bread for the World.
The listing was published in the Global Food for Thought blog, sponsored by the Chicago Council of Global Affairs. There's no shortage of organizations around the world who are working to create a more sustainable, more just food system. Food Tank is honored to highlight many of these groups every week, showing the world that solutions to alleviating hunger, poverty, obesity, food waste, and environmental degradation not only exist, but have huge potential to be replicated and scaled-up.
The list is by no means exclusive, also including Oxfam but leaving out other worthy groups like CARE. Anyway, here the Full List