List of Members of Fourth Lok Sabha From 4th March 1967 to 27th December 1970
| Sr. No. | Member Name | Gender | Constituency Name | State Name | Party Name |
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| 16. | Dr. Imteyaz Ahmad | Male | Giridih | Bihar | Congress |
| 17. | Dr. Jivraj Narayan Mehta | Male | Bhavnagar | Gujarat | Congress |
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| 18. | Dr. K.L. Rao | Male | Vijayawada | Andhra Pradesh | Congress |
| 19. | Dr. Karan Singh | Male | Udhampur | Jammu and Kashmir | Congress |
| 20. | Dr. M. Santosham | Male | Tiruchendur | Madras | Swatantra Party |
| 21. | Dr. Mahadeva Prasad | Male | Maharajganj | Uttar Pradesh | Congress |
| 22. | Dr. Neelam Sanjiva Reddy | Male | Hindupur | Andhra Pradesh | Congress |
| 23. | Dr. Pashupati Mandal | Male | Vishnupur-SC | West Bengal | Congress |
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| 24. | Dr. Ram Manohar Lohia | Male | Kannauj | Uttar Pradesh | Samyukta Socialist Party |
| 25. | Dr. Ram Subhag Singh | Male | Buxar | Bihar | Congress |
| 26. | Dr. Ranenendra Nath Sen | Male | Barasat | West Bengal | Communist Party |
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| 27. | Dr. Sankta Prasad | Male | Misrikh-SC | Uttar Pradesh | Congress |
| 28. | Dr. Sarojini bindurao Mahishi | Female | Dharwad North | Mysore | Congress |
| 29. | Dr. Sisir kumar Saha | Male | Birbhum-SC | West Bengal | Congress |
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| 30. | Dr. Surya Prakash Puri | Male | Nawada-SC | Bihar | Independent |