The Happy Planet Index (HPI) is an index of human well-being and environmental impact that was introduced by the New Economics Foundation (NEF) in July 2006. The index is designed to challenge well-established indices of countries’ development, such as Gross Domestic Product (GDP) and the Human Development Index (HDI), which are seen as not taking sustainability into account. In particular, GDP is seen as inappropriate, as the usual ultimate aim of most people is not to be rich, but to be happy and healthy. Furthermore, it is believed that the notion of sustainable development requires a measure of the environmental costs of pursuing those goals.

The HPI is based on general utilitarian principles — that most people want to live long and fulfilling lives, and the country which is doing the best is the one that allows its citizens to do so, whilst avoiding infringing on the opportunity of future people and people in other countries to do the same. In effect it operationalises the IUCN's (World Conservation Union) call for a metric capable of measuring 'the production of human well-being (not necessarily material goods) per unit of extraction of or imposition upon nature'. Human well-being is operationalised as Happy Life Years. Extraction of or imposition upon nature is proxied for using the ecological footprint per capita, which attempts to estimate the amount of natural resources required to sustain a given country's lifestyle. A country with a large per capita ecological footprint uses more than its fair share of resources, both by drawing resources from other countries, and also by causing permanent damage to the planet which will impact future generations.

Happy Planet is a private company in Vancouver, British Columbia, Canada, known for making organic juices and smoothies. The company was started in 1994 by Randal Ius and Gregor Robertson. They originally started out with one farm producing carrot juice. At first the company supplied primarily natural food stores and small restaurants and cafes. Now their products can be found Canada-wide as well as in parts of the Pacific Northwest United States. At present, the company ships several thousand bottles of juice per week.

The company draws a large percentage of its raw products from local farms. Happy Planet produces three products lines: juices, cooler (a mix of juice and tea), and smoothies. Most of the company's products are certified organic by the Certified Organic Associations of British Columbia and certified Kosher by BC Kosher. In May 2008, they also began a line of prepackaged organic soups.

In 2005, Gregor Robertson left the company to run for the NDP in the riding of Vancouver-Fairview in the May 19 election. He subsequently became Mayor of Vancouver in 2008.