CML Search - Combined Membership List for the AMS, MAA, SIAM, and the AMATYC. Includes almost all US mathematicians.

Chronological List of Mathematicians - A list of all of the important mathematicians working in a given century.

Hypatia - Hypatia is a directory of research workers in Computer Science and Pure Mathematics, and a library of their papers.

Pictures of Mathematicians - A collection of pictures of mathematicians.

Biographies of Women Mathematicians - On-going project by students in mathematics classes at Agnes Scott College, in Atlanta, Georgia.

Erdös Number Project - Research into the collaboration graph centered around mathematician Paul Erdös.

Mathematician Biography Index - A site giving brief biographies for virtually every important mathematician in history.

Mathematics Genealogy Project - Aims to list information about everyone who has earned a doctorate in mathematics during the 20th century. This will allow mathematicians to trace their academic "family tree" and discover their advisor's advisor, their advisor's "siblings" at graduate school, and so on. Over 28,000 names from 380 universities and 30,000 records waiting to be organized.

Number Theorists' Home Pages - Part of the Number Theory Web.

Wolf Prize Recipients in Mathematics - Citations for the prize-winners.

Math biographies - Mathematicians are ones who have studied, have used math in their work or were chosen by students for personal reasons.

Mathematicians of the African Diaspora - African American Mathematicians

Australian-based Mathematicians - Data collected for the 11th edition of the World Directory of Mathematicians.

Harmonic Analysts on the Web - Maintained by Terence Tao, UCLA.

Directory for Hong Kong Mathematicians - Information on the whereabouts of Mathematicians currently working in Hong Kong, with research subject index.

Addresses of Mathematicians Working in Singularity Theory - Maintained by the European singularity theory network.

Indexes of Biographies - Biographies of famous mathematicians, indexed alphabetically and chronologically. Part of MacTutor History of Mathematics archive.

Mathematicians of the Seventeenth and Eighteenth Centuries - Accounts of their lives and works, adapted from "A Short Account of the History of Mathematics" by W. W. Rouse Ball.

Ring Theorist Lists - Compiled by A.D. Bell.

Directory of Scholars in Mathematics and Statistics in Taiwan - Organised initially by institute. With research interests.

Polish Mathematicians Index - Searchable by name or subject.

World Directory / Estonia - The data submitted by the Estonian Mathematical Society to the World Directory of Mathematicians.

Images of Mathematicians on Postage Stamps - High-quality scans of postage stamps from around the world picturing famous mathematicians.

Norwegian Mathematicians - Based on the University of Oslo.

UK Combinatorial Mathematicians - A list maintained by the British Combinatorial Committee.

EMS Directory of Individual Members - Searchable directory of individual members of the European Mathematical Society who have permitted the publication of their data.

Representation Theorist Home Pages - Home pages of researchers.

Folk in Group Pub Forum - Members of a group theory mailing list.

Who's Who in Combinatorics - Part of the Combinatorics Net.

Geometry/Topology Address Book - Edition 08.98.R1 (August 14, 1998).

Semigroup Theorists - Compiled by Jim Renshaw.

Australian Mathematical Society Membership Directory - The 2000 Edition of the Society's Administrative Directory.

Directory of Russian Mathematicians - A searchable index.

Math Reviews Author Database - Searchable: requires subscription.

Mathographies - Some biographical sketches of mathematicians, ancient and modern.

Women in Math Project - Biographies, bibliographies, a search engine, information and links to journals, newsletters, and catalogs on or of interest to women in mathematics.

SIAM Activity Group on Discrete Mathematics - Membership List with links to home pages of members.

Famous Mathematicians from Underrepresented Groups - Links and birthdays.