| No. | Constituency | Member of Parliament | Party affiliation | Roles and responsibilities |
| 1 | Valmiki Nagar | Satish Chandra Dubey | | Bharatiya Janata Party | |
| 2 | Paschim Champaran | Sanjay Jaiswal | | Bharatiya Janata Party | |
| 3 | Purvi Champaran | Radha Mohan Singh | | Bharatiya Janata Party | |
| 4 | Sheohar | Rama Devi | | Bharatiya Janata Party | |
| 5 | Sitamarhi | Ram Kumar Sharma | | Rashtriya Lok Samta Party | |
| 6 | Madhubani | Hukmdev Narayan Yadav | | Bharatiya Janata Party | |
| 7 | Jhanjharpur | Birendra Kumar Chaudhary | | Bharatiya Janata Party | |
| 8 | Supaul | Ranjeet Ranjan | | Indian National Congress | |
| 9 | Araria | Mohammed Taslimuddin (died on 17 September 2017) | | Rashtriya Janata Dal | |
| Sarfaraz Alam (elected on 14 March 2018) | | Rashtriya Janata Dal | |
| 10 | Kishanganj | Mohammad Asrarul Haque (died on 7 December 2018) | | Indian National Congress | |
| Vacant from 7 December 2018) | |
| 11 | Katihar | Tariq Anwar (resigned on 28 September 2018) | | Nationalist Congress Party | |
| Vacant from 28 September 2018) | |
| 12 | Purnia | Santosh Kumar Kushwaha | | Janata Dal | |
| 13 | Madhepura | Rajesh Ranjan (Pappu Yadav) | | Rashtriya Janata Dal | |
| 14 | Darbhanga | Kirti Azad | | Bharatiya Janata Party | |
| 15 | Muzaffarpur | Ajay Nishad | | Bharatiya Janata Party | |
| 16 | Vaishali | Rama Kishore Singh | | Lok Janshakti Party | |
| 17 | Gopalganj (SC) | Janak Ram | | Bharatiya Janata Party | |
| 18 | Siwan | Om Prakash Yadav | | Bharatiya Janata Party | |
| 19 | Maharajganj | Janardan Singh Sigriwal | | Bharatiya Janata Party | |
| 20 | Saran | Rajiv Pratap Rudy | | Bharatiya Janata Party | Minister of State (I/C), Skill Development and Entrepreneurship (2014–2017), Minister of State, Parliamentary Affairs (2014–2016) |
| 21 | Hajipur (SC) | Ram Vilas Paswan | | Lok Janshakti Party | Lok Sabha Leader, Lok Janshakti Party, Cabinet Minister, Consumer Affairs, Food and Public Distribution |
| 22 | Ujiarpur | Nityanand Rai | | Bharatiya Janata Party | |
| 23 | Samastipur (SC) | Ram Chandra Paswan | | Lok Janshakti Party | |
| 24 | Begusarai | Bhola Singh (died on 19 October 2018) | | Bharatiya Janata Party | |
| Vacant from 19 October 2018 | |
| 25 | Khagaria | Mehboob Ali Kaiser | | Lok Janshakti Party | |
| 26 | Bhagalpur | Shailesh Kumar Mandal (Bulo Mandal) | | Rashtriya Janata Dal | |
| 27 | Banka | Jay Prakash Narayan Yadav | | Rashtriya Janata Dal | Lok Sabha Leader, Rashtriya Janata Dal |
| 28 | Munger | Veena Devi | | Lok Janshakti Party | |
| 29 | Nalanda | Kaushalendra Kumar | | Janata Dal | Lok Sabha Leader, Janata Dal (United) |
| 30 | Patna Sahib | Shatrughan Sinha | | Bharatiya Janata Party | |
| 31 | Pataliputra | Ram Kripal Yadav | | Bharatiya Janata Party | Minister of State, Drinking Water and Sanitation (2014–2016), Minister of State, Rural Development (2016–2019) |
| 32 | Arrah | Raj Kumar Singh | | Bharatiya Janata Party | Minister of State (I/C), Power, and New and Renewable Energy (2017–2019) |
| 33 | Buxar | Ashwini Kumar Choubey | | Bharatiya Janata Party | Minister of State, Health and Family Welfare (2017–2019) |
| 34 | Sasaram (SC) | Chhedi Paswan | | Bharatiya Janata Party | |
| 35 | Karakat | Upendra Kushwaha | | Rashtriya Lok Samta Party | Lok Sabha Leader, Rashtriya Lok Samta Party, Minister of State, Rural Development, Panchayati Raj, and Drinking Water and Sanitation (2014), Minister of State, Human Resource Development (2014–2018) |
| 36 | Jahanabad | Arun Kumar | | Rashtriya Lok Samta Party | |
| 37 | Aurangabad | Sushil Kumar Singh | | Bharatiya Janata Party | |
| 38 | Gaya (SC) | Hari Manjhi | | Bharatiya Janata Party | |
| 39 | Nawada | Giriraj Singh | | Bharatiya Janata Party | Minister of State, Micro, Small and Medium Enterprises (2014–2017), Minister of State (I/C), Micro, Small and Medium Enterprises (2017–2019) |
| 40 | Jamui (SC) | Chirag Paswan | | Lok Janshakti Party | |