Boultham is an inner-city and ward of Lincoln in Lincolnshire, England. The population of the City of Lincoln ward at the 2021 census was 11,258 this included the areas of New Boultham and Swanpool. The ward is one of the eleven electoral districts within the City of Lincoln Council.

In 1911 the civil parish had a population of 1028. On 9 November 1920 the parish was abolished and merged with Lincoln.

Boultham Mere, created in 1989, is a nature reserve situated near a railway line. The Lincolnshire Wildlife Trust looks after it. It has a colony of Variable Damselfly.

The ecclesiastical parish of Boultham covers most of Lincoln west of the River Witham near Lincoln High Street and part of Lincoln City Centre. The northern boundary is defined by Brayford Pool and the Fossdyke as far as Carholme Golf Course. The district includes the suburbs of Hartsholme, New Boultham and Swanpool. Tritton Road runs through the centre of Boultham.

The grade II* listed St Helen's Church is used for occasional service and the newer building of Holy Cross church is used for routine worship, within the Anglican Boultham Parish.

The area is home to Lincoln Central Mosque and Cultural Centre and multiple retail parks.

As of 2011, the Boultham ward on Lincoln City Council is represented by three Labour Party councillors and the ward on Lincolnshire County Council by one Labour councillor.

At the 2021 census, the ward profile population was 11,258. Of the findings, the ethnicity and religious composition of the ward was:

Boultham: Ethnicity: 2021 Census
Ethnic group	Population	%
White	9,845	87.4%
Asian or Asian British	697	6.2%
Black or Black British	275	2.4%
Mixed	240	2.1%
Other Ethnic Group	137	1.2%
Arab	64	0.6%
Total	11,258	100%

The religious composition of the ward at the 2021 Census was recorded as:

Boultham: Religion: 2021 Census
Religious	Population	%
Irreligious	5,614	55.2%
Christian	4,044	39.8%
Muslim	269	2.6%
Other religion	84	0.8%
Hindu	69	0.7%
Buddhist	44	0.4%
Sikh	30	0.3%
Jewish	11	0.1%
Total	11,258	100%

• Media related to Boultham at Wikimedia Commons
• "Boultham Mere", Lincolnshire Wildlife Trust Nature Reserves
• "Boultham Mere - seeing Bittern in Lincolnshire", Lincsbirdclub.co.uk. Retrieved 4 August 2013
• "Boultham Mere", Boulthamere.blogspot.com
• "Lincolnshire and UK Dragonflies and Damselflies", Forktail.co.uk
• Boultham in the Domesday Book