Nawalparasi (West of Bardaghat Susta) district or Nawalparasi West, as known commonly (Nepali: नवलपरासी (बर्दघाट सुस्ता पश्चिम) वा नवलपरासी पश्चिम [nʌwʌlpʌˈɾasi ˈpʌst͡sim]), also frequently referred to as just Parasi District, is a district located in Lumbini Province of Nepal. It is 1 out of 12 districts of Lumbini Province. The headquarter of the district is located in Ramgram.

Formerly, Nawalparasi West was a part of Nawalparasi District, the other part being Nawalparasi East (natively called Nawalpur). Thus, the districts Nawalparasi (West of Bardaghat Susta) and Nawalparasi (East of Bardaghat Susta) were created after the state's reconstruction of administrative divisions as of 20 September 2015.

The total area of Nawalparasi District is 634.88 square kilometres (245.13 sq mi) and total population of this district as of 2011 Nepal census is 321058 individuals. Bhojpuri is the local language of the district.

At the time of the 2011 Nepal census, Parasi District had a population of 331,904.

Ethnicity/caste: 18.4% were Tharu, 11.5% Hill Brahmin, 7.4% Chamar/Harijan/Ram, 6.9% Musalman, 6.4% Magar, 5.8% Yadav, 4.6% Chhetri, 3.5% Kewat, 3.3% Teli, 2.9% Kami, 2.0% Kahar, 1.9% Gurung, 1.8% Koiri/Kushwaha, 1.7% Dhobi, 1.7% Kurmi, 1.6% Dusadh/Pasawan/Pasi, 1.5% Kathabaniyan, 1.4% Rajbhar, 1.3% other Terai, 1.1% Musahar, 1.1% Newar, 1.0% Damai/Dholi, 0.9% Hajam/Thakur, 0.9% Sanyasi/Dasnami, 0.8% Mallaha, 0.7% Kumal, 0.6% Bin, 0.6% Lohar, 0.6% Thakuri, 0.5% Badhaee, 0.5% Gaderi/Bhedidar, 0.5% Halwai, 0.5% Tamang, 0.4% Kalwar, 0.4% Sarki, 0.3% Terai Brahmin, 0.2% Baraee, 0.2% other Dalit, 0.2% Dhankar/Dharikar, 0.2% Dhunia, 0.2% Khawas, 0.2% Kumhar, 0.2% Rajput, 0.1% Badi, 0.1% Bengali, 0.1% Darai, 0.1% Dom, 0.1% Gharti/Bhujel, 0.1% Kayastha, 0.1% Mali, 0.1% Pattharkatta/Kushwadiya, 0.1% Rai, 0.1% Sonar, 0.1% Yakkha and 0.1% others.

Religion: 88.5% were Hindu, 6.8% Muslim, 3.4% Buddhist, 0.8% Christian, 0.1% Bon, 0.1% Kirati and 0.1% others.

Literacy: 66.6% could read and write, 2.0% could only read and 31.3% could neither read nor write.

As their first language, 55.7% spoke Bhojpuri, 26.8% Nepali, 8.7% Tharu, 3.3% Maithili, 2.8% Magar, 1.2% Gurung, 0.4% Newar, 0.3% Tamang, 0.1% Bhujel, 0.1% Doteli, 0.1% Hindi, 0.1% Urdu and 0.1% other languages.

The district is divided into 7 local level body in which 3 are urban municipality and 4 are rural municipality.

• Bardaghat
• Ramgram
• Sunwal

• Susta Rural Municipality
• Palhinandan Rural Municipality
• Pratappur Rural Municipality
• Sarawal Rural Municipality

• People's Progressive Party
• Nawalpur District

• MoFALD
• DCC Nawalparasi

27°19′N 83°24′E / 27.32°N 83.40°E / 27.32; 83.40