Muthollaayiram (Tamil: முத்தொள்ளாயிரம், literally "triple nine-hundred") is an ancient Tamil anthology, composed around the 5th century CE. The work consists of three sets of 900 verses each, making a total of 2,700 verses in all, sung in praise of the three ancient Tamil rulers of the Cheras, the Cholas, and the Pandyas. This is in line with an ancient Tamil custom of writing 900 verses to complete a work, as in several other works such as Vaccha Thollaayiram and Arumbai Thollaayiram. It tells about various characteristics of these ancient rulers, namely, land, fortification, army, fighting spirit, valour, generosity, and so forth. The author of the work is not known. Much of it has been lost, with only a small portion available. Out of the 2,700 verses, only 109 verses have been found.