The word Ajman comes from Arabic عَجْمان (ʕajmān), related to عَجَم (ʕajam, “foreigner”), because the area was at one time inhabited by Persians.

An 1822 British maritime survey noted that Ajman had one of the best backwaters on the coast and was a small town with a single fortified building, the ruler's house.

[clarification needed] In his absence, a part of Bani Yas from Abu Dhabi sacked Ajman town and its date groves.

By the 20th century, J. G. Lorimer's survey of the coast of the Trucial States showed Ajman to be a small town of some 750 inhabitants (in comparison, the population of Dubai at the time numbered over 10,000).

[11] On 2 December 1971, Ajman, under Sheikh Rashid bin Humayd Al Nuaimi, joined the United Arab Emirates.

[12] Ajman is home to the Ruler's office, companies, commercial markets, and about 50 international and local retail shops.

It has immensely grown throughout the years, with recent investments from foreign companies and installations and renovations of its tourist attractions, hotels and commercial sites.

City Centre Ajman, the Emirate’s biggest mall, is a big attraction as well for its unique architectural experience and variety of shops and confectionaries.

Ajman's corniche is a popular evening and weekend destination for families and features a number of fast food outlets, coffee shops and stalls.

"Colt Gold" title won by Gallardo J in 2016 where H.H Ammar bin Humaid Al Nuaimi was crowned as best breeder and owner.