Kaithal district is one of the 22 districts of Haryana, a state in northern India. Kaithal town is the district headquarters.

This district came into existence on 1 November 1989.

Kaithal district comprises four tehsils: Kaithal, Guhla, Pundri and Kalayat; and the three sub-tehsils of Rajaund, Dhand and Siwan.^[2][3] The four Haryana Vidhan Sabha constituencies located in this district are Guhla, Kalayat, Kaithal and Pundri.^[4] All of these are part of Kurukshetra Lok Sabha constituency.

According to the 2011 census Kaithal district has a population of 1,074,304,^[6] roughly more than the nation of Cyprus^[7] or the US state of Rhode Island.^[8] This gives it a ranking of 423rd in India (out of a total of 640).^[6] The district has a population density of 463 inhabitants per square kilometre (1,200/sq mi) .^[6] Its population growth rate over the decade 2001-2011 was 13.39%.^[6] Kaithal has a sex ratio of 880 females for every 1000 males,^[6] and a literacy rate of 70.6%. Scheduled Castes make up 23.04% of the population.^[6]

Theh Polar, the ancient site from the vedic period of mahabharta, is located on the banks of Saraswati river 10 km north of Kaithal on Kaithal-Siwan road. Pulastya rishi - one of the ten Prajapati and one of the mind-born sons of Brahma^[11] and also an ancestor of Ravana, had his ashram here. The name Theh Polar is composite of Polar - corrupted version of Pulastya and Theh meaning the ruined mound of an earlier habitation. The archaeological cultural artifacts found here in the partial excavation provide the evidence that this site has been inhabited for at least 3000 years since the beginning of 1st millennium BC up to the early Mughal period.^[12]

There are 3 large archaeological mounds, 2 are 480x635x15.5 ft and third is 779x690x10 ft. In 1933-34, these mounds were partially excavated by H.L. Srivastava who found 465 artifacts including coins, clay seals, beads, pottery, copper vessels, etc. Earlier era punch-marked silver coins have symbols of sun, six-armed Sahasrara chakra, hills with 3 peaks. Coins of Yaudheya (5th century BCE to 4th century CD), Indo-Parthian (19-226 CE), Kushan Empire (30-375 CE), Kidara (350-390 CE), Indo-Sassanian (230-365 CE), Hindu Shahis (822-1026 CE) coins of the bull and horseman, early Mughal period copper and silver coins.^[12]

• Administrative divisions of Haryana