European IQ Test
Free online IQ test.

Daily IQ Test
Daily changing IQ-style questions of diverse nature for fun and learning purposes.

ACE Intelligence Website
Free IQ tests, including an official test and weekly changing tests.

Self-Discovery Workshop IQ test
Online IQ test with information on intelligence testing and history thereof.

Intelligence Tests
List and rating of IQ tests available online.

Startkabel IQ Links
Links to IQ tests in various languages.

IQ Tests
Online IQ tests for various age categories. Russian site, but in English.

IQ Test Labs
Free online IQ test with 10-minute timer and automatic scoring.

Fast Comprehensive IQ Test
Short online IQ test.

Queendom IQ Tests
Various professionally designed online IQ tests.

Test of Logical Abstractive Perception
Overview of its psychometric properties and links to the test itself.

Encephalist-R22
High-range test downloadable as PDF file; web site contains statistics for the test.

Ultimate IQ test link site
Over 100 links to IQ tests in various languages.

Davideck IQ Tests
The IQ Tests page of Dave Desk's Personality and IQ Tests portal. Each quiz has a rating.

International High IQ Society
Professional free online IQ tests; you can choose between Flash and HTML version. Membership possible.

Emode's Ultimate IQ Test
Free Ph.D. certified test. You get a 15-page personalized analysis.

Cognitive Reasoning Register
Measurement of ability to learn, solve problems, and intellectual acuity. Often used pre-hire for management and IT professional assessment.

Tests Of Intelligence
Various types of IQ tests to test yourself.

IQ Tests
Directory of intelligence tests of varying psychological validity; includes brief description and estimated time required for completion.

In-Depth IQ Test
Free 12-minute test.

Uncommonly Difficult IQ Tests
Large variety of IQ tests, links to HIQ organizations, articles about intelligence.

Sentence Completion Test
Assesses English vocabulary knowledge. Presented as an experimental form of a verbal IQ test.

Difficult IQ tests
Comprehensive list of IQ tests and IQ societies.

2 Free Online IQ Tests
Answer 40 questions in 30 minutes and receive an analysis with your IQ.

TOI
Contains special and combined IQ tests and links to IQ and EQ sites.

IQ Test
Professional IQ Test with the option of acquiring a Certificate of Accomplishment.

Know yourself better
An IQ level indicates how one is positioned compared to the majority of individuals in a given age bracket.

Foritensum
A very difficult culture-fair test.

Quick IQ TEST
You get a title and image to go with your score.

Hangar Z's BrainStorm
This site uses scientificly proven principals to help stimulate your thought process. Part of the Hangar Z Network

SON-R Nonverbal Intelligence Tests
Individual tests for children not requiring use of language. Especially suited for children with problems in the areas of language and verbal communication. Norms available for ages 2 to 17.

Sigma Test
Admission test for several high-IQ societies. Contains sections with various levels of difficulty.

USATests.com
Provides an online IQ, EQ and general knowledge tests that evaluate your intelligence.

IQ Inform
Take a 12-minute IQ test and receive a certificate and multi-page report.

Cerebrals Online Intelligence Tests
This page gathers online intelligence tests prepared by members of the Cerebrals Society.

Expert Rating IQ Test for Adults
An IQ test that takes 30-40 minutes and provides online results ($9.95).

Free IQ tests
Provides free intelligence tests prepared by Jouve Testing. The tests will help you to measure your mental ability and to estimate your IQ.

IQ Test Center for Kids
Free IQ test site for kids with various verbal, math, personality and aptitude tests.