Below is a list of recommended organizations and resources. I’ve tried to organize by category, though some could be placed in multiple sections. Please feel free to suggest other groups to be added to the list.

Jewish Food and Culture
Al Hashulchan
Beyond Bubbie
Chabad.org: Recipes and Cooking
Foodaism
Galilee Seasonality
Haaretz: Food
Israeli Harvest
Jews Eat VeggiesJewish Food Experience 
Jewish Food Hero
Jewish Food Society
Jewish Journal: Food
Joy of Kosher
Machane Yehuda Map/Fun Joel Tours
Shouks in Israel
YNet: Food

Jewish Farms
Adamah
Beantown Jewish Gardens
Coastal Roots Farm
Eden Village Camp
Ekar Farm
Jewish Farm School
Pearlstone Retreat Center
Pushing the Envelope Farm
Teva
Urban Adamah
Yiddish Farm

Jewish Food Advocacy and Education
Canfei Nesharim
Coalition on the Environment & Jewish Life
Fair Trade Judaica
Green Hevra
Hazon
Jewcology
Jewish Eco Seminars
Shmita Network
Siach
Tav HaYosher
T’ruah

Food Access and Hunger (US Jewish Groups)
Avodah
Challah for Hunger
Masbia
MAZON: A Jewish Response to Hunger
Project Chicken Soup
Sova Community Food and Resource Program
Sova Project

Food Access and Hunger (Israel)
Lasova
Latet
Leket
United Children’s Food Bank of Israel
Yad Eliezer
Yad Ezra V’Shulamit

US Food Access, Hunger and Food Systems
AmpleHarvest.org
Fair Food Network
Fair Food Program
Food Research and Advocacy Center
Hunger Free America
National Foundation to End Senior Hunger
New Roots
Roots of Change
US Food Sovereignty Alliance
Wholesome Wave

Judaism and Animal Welfare
Freedom Farm Sanctuary
Ginger Vegetarian Community Centre
Jewish Initiative for Animals
Jewish Veg
Jewish Vegetarian Society
Kosher Conscience
Shamayim
Vegans on Top

Animal Welfare
A Well-Fed World
Beyond Carnism
Choose Veg
Compassion Over Killing
FARM
Farm Sanctuary
Farm Forward
Good Food Institute
Humane Society International
Humane Society of the US 
Mercy for Animals

Food and Agriculture Policies (Israel)
Adam Teva V’Din
Agrior
Arava Institute
Aytzim
EcoPeace Middle East
Green Prophet
Israel Bio-Organic Agriculture Association
Slow Food Upper Galilee

Food, Agriculture, Labor Policies (US)
Agrarian Trust
American Farmland Trust
Center for Food Safety
Center for Science in the Public Interest
Change Food
Civil Eats
Coalition to Abolish Slavery and Trafficking
Coalition of Immokalee Workers
Community Alliance with Family Farmers
Environmental Working Group
Federation of Southern Cooperatives/Land Assistance Fund
Food Empowerment Project
Food Democracy Now
Food and Environment Reporting Network
Food First
Food Forward
Food Policy Action
Food Politics
Food Tank
Food Trust
IRC’s New Roots
Land Institute
Landscapes for People, Food and Nature
National Family Farm Coalition
National Farmers Market Association
National Sustainable Agriculture Coalition
New Food Economy
Pesticide Action Network
Rural Coalition/Coalicion Rural
Shared Earth
United Farm Workers
Women Food and Agriculture Network

Biodiversity
Crop Trust
Navdanya
Open Source Seed Initiative
Seed Map
Seed Savers
Terra Madre

Consumer Education, Food, Nutrition, and Health
Borough Market
Fair Trade International
Food and Tech Connect
Food Day
Food Rescue US
Good Food Org Guide
Grace Communications: Food, Water, Energy
James Beard Foundation
Lexicon of Sustainability
Meatless Monday
Non GMO Project
Oxford Symposium on Food and Cookery
Reducetarian
Red Lentil Consulting
Seasonal Food Guide
Slow Food International
Slow Food USA
Small Planet Institute
Sustainable America
Sustainable Table
The Family Cooks

Youth
Edible Schoolyard Project
FoodCorps
Greenhorns
National Farm to School Network

Interfaith
Alliance of Religions and Conservation
Faith in Food
Food and Faith Project (Center for a Livable Future)
Interfaith Action
Interfaith Center for Sustainable Development

Certifications and Guides
Animal Welfare Approved
Animal Welfare Institute: Food Labels & Animal Welfare Guides
Happy Cow
Eat Well Guide
EWG’s Dirty Dozen & Clean 15
Humane Society of the US’ Guide to Egg Labels
Fair Food
Fair Trade Certified
Non-GMO
USDA Organic