Christian Church (Disciples of Christ)
http://www.disciples.org/
The official site this American denomination.
The Church of England
http://www.churchofengland.org/
The official site of the Church of England.
Episcopal Church Home Page
http://www.episcopalchurch.org/
Anglican Church in America.
Evangelical Lutheran Church in America
http://www.elca.org/
A major denomination of the Lutheran tradition in North America.
Presbyterian Church (U.S.A.)
http://pcusa.org/
News, graphics, and links to sites of interest to
Presbyterians.
Religious Society of Friends
http://www.quaker.org/
A long list of links (maintained by Russell Nelson) relevant to Quaker
history, individuals, and groups.
Southern Baptist Convention
http://www.sbc.net/
Information concerning the Southern Baptist Convention.
Unitarian Universalist Association
http://www.uua.org
The official site for a liberal association of fellowships and churches that
is inclusive of pagan and other non-mainstream social and spiritual
orientations.
United Church of Christ
http://www.ucc.org/
The denominational home page, produced by the Office of
Communication.
United Methodist Church
http://www.umc.org/
Denominational home page, with news, General Conference information,
directories, etc.
List of Christian denominations
http://en.wikipedia.org/wiki/List_of_Christian_denominations
A linked list from Wikipedia indicates a much wider range of denominations.