Note that the Myers-Briggs® type can only be achieved by taking the authentic Myers-Briggs Type Indicator®.
This is one of the most popular tests online, it's not one of my personal favourites but it's not very long and is sufficiently accurate.
Kisa Personality Test
This is an interesting test with more uncommon questions. It's rather accurate and it also gives you the "in-between" option.
SimilarMinds Short Test
A very short test (48 questions), but nonetheless one of the most accurate that I have taken.
SimilarMinds Word Test
In this test you are given 70 words and you have to decide to what extent they characterize you.
SimilarMinds Word Choice Test
Very short, very accurate : just 24 pairs of words.
Kersey Temperament Sorter
This is a very professional and accurate personality test that is being offered to you for free (you will have to register with their site though). Unfortunately the free results will only specify your temperament (SP, SJ, NF or NT). You have to pay for the full typing.
An innovative test based on non-standard questions. The results include all the types and how much each of them fits you (in percentages).
Personality Test Center
68 well-written questions and an accurate instrument for figuring out your Jungian type. I found the answer options easy to choose from which is rare.
Ithaca MB Test
This is a short and reliable test.
A 20-question quick and effective test that also includes the viewing/analysis of one of Dali's paintings.
This is the test developed by Fergus Duniho. It has 107 questions, among which some issues are supplimentary - mainly discrimiating between the cognitive functions - designed to refine your results. It's highly accurate but remember it's a longer test so it'll take you about 40 minutes+ to do it.
Jung test on GoddessFlight [new]
I found this test interesting and somewhat refreshing - it has 80 items which are better described than in other questionnaires. The results are reliable as well.
A very innovative word-association test that seeks to discover the innermost and mainly unconscious workings of your mind in order to determine your Jungian type. It didn't give me very accurate results, but the techinique is so intriguing that I can't but recommend it, at least for the fun of it. Don't forget to press the 'START' button so you are given the instructions.
As the name presents it, it's a 41-question test with reliably accurate results.
This is a very good test, but you will have to register with their site in order to take it.
Another Jungian test, equally well-scored.
The Insight Game
This test is set as a game of cards, to make it more fun (?!). Well apart from the doubtful graphical interface, it can be considered as a satisfying type indicator.
Fudjack/Dinkelaker Functional Preferences Instrument
Now I liked this test very much. The results will give you the scoring for each of the 4 letter types (N,S,T,F) and according to the order of importance that you give them, they suggest four main types your real one is most probably among. Most of the questions and the answer variants are different and original.
Yet another respectable Jung test.
Blogthings Test [new]
A short (40 questions) test.