Haridwar Lok Sabha constituency is one of the five Lok Sabha (parliamentary) constituencies in Uttarakhand. It comprises two districts namely Dehradun (part) and Haridwar. This constituency came into existence in 1977, following the delimitation of Lok Sabha constituencies. Between the period of 1977 and 2009, this constituency was reserved for the Scheduled Caste candidates.

Before the formation of Uttarakhand

Haridwar Lok Sabha constituency comprised the following five Vidhan Sabha (legislative assembly) constituency segments of Uttar Pradesh:

After the formation of Uttarakhand

At present, Haridwar Lok Sabha constituency comprises the following fourteen Vidhan Sabha (legislative assembly) segments:

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