A Bachelor of Environmental Science is an undergraduate bachelor's degree

Bachelor's degree

A bachelor's degree is usually an academic degree awarded for an undergraduate course or major that generally lasts for three or four years, but can range anywhere from two to six years depending on the region of the world...

 awarded for courses taken in the study of environmental science

Environmental science

Environmental science is an interdisciplinary academic field that integrates physical and biological sciences, to the study of the environment, and the solution of environmental problems...

 or related disciplines, such as sustainable resource development, environmental health

Environmental health

Environmental health is the branch of public health that is concerned with all aspects of the natural and built environment that may affect human health...

, or ecological sustainability.

In practice, this is essentially equivalent to a Bachelor of Science

Bachelor of Science

A Bachelor of Science is an undergraduate academic degree awarded for completed courses that generally last three to five years .-Australia:In Australia, the BSc is a 3 year degree, offered from 1st year on...

 degree with a specialty in environmental impacts. Relatively few institutions award Bachelor of Environmental Science degrees. The degree should not be confused with a Bachelor of Environmental Studies

Bachelor of Environmental Studies

A Bachelor of Environmental Studies is an undergraduate bachelor's degree awarded for courses taken in the study of environmental studies or related disciplines, such as geography, urban planning, environmental resource studies, or architecture....

, which typically has less of a science focus.

The Bachelor of Environmental Science degree is frequently abbreviated as B.Env.Sc., especially in the use of post-nominals.

Canada

• Trent University
  Trent University
  Trent University is a liberal arts and science-oriented institution located along the Otonabee River in Peterborough, Ontario, Canada.The enabling legislation is the Trent University Act, 1962-63. The University was founded through the efforts of a citizens' committee interested in creating a...
  
   (formally a Bachelor of Environmental Studies and Science degree)
• University of Manitoba
  University of Manitoba
  The University of Manitoba , in Winnipeg, Manitoba, Canada, is the largest university in the province of Manitoba. It is Manitoba's most comprehensive and only research-intensive post-secondary educational institution. It was founded in 1877, making it Western Canada’s first university. It placed...