Kalaikkalanjiam (Tamil: Encyclopedia) is a universal encyclopedia in Tamil, published by the Tamil Development Academy, Chennai. The project was funded by the Union Government of India, the State Government of then Madras Presidency and many Tamil well wishers. The Tamil Development Academy announced its intent to produce this encyclopedia on the day of Indian Independence 15 August 1947. The work started in the academy's Madras University Campus on 20 October 1947. The chief editor of this effort was Periyasaamy Thooran.
Contents.
The first volume was released in 1954 and the tenth and final volume was released in 1968.
 Volume 1 – 1954 – 742 pages
 Volume 2 – 1955 – 760 pages
 Volume 3 – 1956 – 756 pages
 Volume 4 – 1956 – 778 pages
 Volume 5 – 1958 – 750 pages
 Volume 6 – 1959 – 770 pages
 Volume 7 – 1960 – 754 pages
 Volume 8 – 1961 – 758 pages
 Volume 9 – 1963 – 751 pages
 Volume 10 – 1968 – 560 pages
Contributors.
Following groups were involved in producing these volumes:
In total, 2240 scholars have contributed to various articles in these 10 volumes.
A second revised edition for this encyclopedia was planned with 12 volumes of 1000 pages each. But the plan didn't materialize due to various reasons.
The entire Kalaikkalanjiam is available online at the Tamil Virtual Academy website.
In 2014, Tamil Development Academy donated all 10 volumes under Creative Commons Share-Alike 3.0 license based on Tamil Wikipedia contributors' request. Along with this, 10 volumes of Kuzhandhaigal Kalaikkalanjiam was also released under Creative Commons license.