The images at the sites below are generally considered free to use.
You should always double check before you use an image, as sometimes terms can change, and you should always cite your source.

General

• Photos for Class

• Pexels

• Unsplash

• new Creative Commons Search

Ancient Civilizations

• EduPics

Animals

• NOAA's Ark

• Open Image Bank: Animals

• Pics4Learning: Animals

Food and Drink

• Picdrome: Food and Drink

• Open Image Bank: Food

• Pics4Learning: Food

Landscapes

• America's Coastlines

• Small World

Nature

• Picdrome

• Open Image Bank: Flowers

• Pics4Learning: Flowers

People

• Life Archives

Space

• NOAA in Space

• Earth Science World Image Bank

• NASA Image of the Day

Sports

• Picdrome: Sports & Recreation

• Pics4Learning: Sports and Leisure

School

• Teachers and Students in Action

Weather

• NOAA Photo Library: Weather Wonders

• NOAA Photo Library: Severe Storms