Jehovah's Witnesses do not practice literal circumcision for religious reasons. Hindus, Buddhists, and Jains, are forbidden to circumcise as it violates the body. Mormons, Christian Scientists, and the Amish are also forbidden to circumcise or be circumcised.
The Amish religion rejects circumcision as do some other Christian sects including the Mormons and Christian Scientists.
*Update: The answer provided conflicts with my experience as a provider of this service to many in the Amish community.
*Updated answer:
Most Mormons do practice circumcision, but it is largely as a cultural custom and not a religious one.
Russia is an christian nation, they don't practice circumcision
No. The Amish, like most Christians, reject the practice of polygamy.
Yes, Malaysia does practice male and female circumcision. It is known as Khitan.
Yes, Indonesia does practice circumcision; male and female. This is referred to as Khitan.
The Amish practice their faith by living without electronics or modern machinery. They believe that this brings them close to God.
no, not all tribes perform circumcision
No
Circumcision is not a part of Christian tradition.
Circumcision is a requirement of Judaism although there is a small fringe group of mainly non-religious Jews who are choosing to not circumcise their sons. Circumcision is also required by Islam according to the majority of its adherents. Refer to related questions below for more information.
Some Amish communities may remove the teeth of young women, but it is doubtful that it is a widespread practice of the Amish.
In general, modern Jews still believe and practice circumcision.
Muslims were never banned from practicing malecircumcision. Female circumcision is forbidden and it is not an Islamic practice .