There are seventeen religious symbols encircling this sticker. From the top going clock-wise, they are:
Indigenous (Kokopelli) - Indigenous peoples are those naturally occurring in a particular region. The symbol depicted is of Kokopelli, a mythical Hopi humpbacked flute player who symbolizes fertility, replenishment, music, dance and mischief. More here.
Horus - The Eye of Horus is an ancient Egyptian symbol of protection, royal power and good health, personified in the goddess Wadjet who was intended to protect the king in the afterlife and to ward off evil. Read more at Wikipedia.
Hinduism is an amalgam of diverse religious views of peoples of India. The Om or Aum symbol embodies the essence of the entire universe, the sound at the root of creation holding everything together. See.
Sikhism originated in the Punjab region of India in the 15th century. Sikhs believe the equality of humankind, universal brotherhood, and One Supreme God. The Ek-Onkar symbol means "There is one God." More here.
Unitarian is a religious community characterized by support for a free and responsible search for truth and meaning. They're open to a pluralistic approach to personal choice of beliefs. The chalice and flame represents the Father cradling the world in his arms. See here.
Christian - The cross is the most well known symbol of Christianity. Sometimes called a crucifix, it is associated with Jesus having died on a cross. For more information, click here for Wikipedia article.
Islam / Diana (Goddess of the Moon) - The crescent moon and star, are actually ancient pagan symbols, and didn't come to be associated with Islam until the Turks conquered Constantinople in 1453, and Osman, the founder of the Ottoman Empire had a dream of this symbol stretching across the globe. Many Muslims do not accept this symbol. See..
Confucian - Confucianism: the tradition and way of life propagated by Confucius. The symbol represents the source of life and is also called the water symbol. Although not organized as a religion, Confucianism reinforces ideals of humanness and benevolence and is fundamental to Chinese culture. See About.com for further info.
Pagan/Wicca is a Neopagan religion and a modern form of witchcraft. The Pentagram has Celtic origins referring to Earth Goddess. Got to this link for further information.
Zoroastrianism from Persia (Iran) teachings of Zoroaster, Zarathustra, Avestan, synonymous with Mazdaism, felt to be the supreme divine authority. The Faravahar shows the human soul striving for improvement and higher powers. See link.
Buddhism - A teaching passed down by Siddhartha Guatama Buddha (The Awakened One), who brought insights to end suffering, achieve Nirvana, and escape the cycle of rebirth. The eight-spoked Dharmacakra represents the Eightfold Noble Path. See link.
Native / Animism shield symbol promotes protecting land and life, and unifying all nations in a universe in which all things are spiritual or embody Life Principle. It is also a Hopi world symbol, a cosmic cross representing north, sound, east, west, and the balance of the four colors of humans who came to the world to keep in balance, with peace and honor to self and other. See here.
Baha'i is a faith founded by Bahá’u’lláh from Tehran in the mid 1800's, and emphasized global unity. The nine-pointed star stands for the highest single-digit number and completeness and fulfillment. See further.
Judaism (Jewish) - Menorah is a seven branched candelabrum symbolizing the Nation of Israel and its mission to be a light unto the nations. Link.
Atheism (Atheist) - is the position that there are no deities, no gods, and tends to be skeptical of supernatural claims. The atom symbol is broken open at the bottom, suggesting the incompleteness inherent in science. Link.
Taoism - Tao is the first cause in the universe, the force that flows through everything. Taoists are dedicated to living in harmony with that flow. The Yin Yang symbol represents the balance of opposites within the Tao, shown as the outer circle. Each opposite includes some of the other in a constant dance of change. See more here.
Jainism prescribes pacifism and non violence toward all living beings and effort in the soul moving toward divine liberation and consciousness. The raised hand is a reminder to stop and think twice before risk of harming anything. More at this link.
Shinto - Way of the Gods, spirits, essences, deities, adopted by Japanese to establish a connection to Japan's ancient past. The symbol represent a Torii, a gate commonly found at the entrance to a Shinto shrine, and marks the boundary between physical and spiritual worlds. Click here for more details.