Nalwa Assembly constituency in Hisar district is one of the 90 Vidhan Sabha constituencies of Haryana state in northern India.

Nalwa became a new Assembly constituency of Legislative Assembly of Haryana in the state of Haryana in the 2008 delimitation exercise. Earlier, most of the villages of this constituency were under Adampur, a stronghold of Bhajan Lal. Some of the villages were earlier with the Bawani Khera Constituency.

Nalwa is part of Hisar Lok Sabha constituency along with eight other Assembly segments, namely, Uchana in Jind district and Adampur, Uklana, Narnaund, Hansi, Barwala, Hisar and Bawani Khera in Hisar district.

Year	Member	Party
Till 2009 : Constituency did not exist
2009	Sampat Singh		Indian National Congress
2014	Ranbir Singh Gangwa		Indian National Lok Dal
2019			Bharatiya Janata Party
2024	Randhir Panihar

2024 Haryana Legislative Assembly election: Nalwa

Party		Candidate	Votes	%	±%
	BJP	Randhir Panihar
	INC	Anil Mann
	JJP	Virendra Chaudhary
	NOTA	None of the Above
Majority			12,144
Turnout
	BJP hold		Swing

2019 Haryana Legislative Assembly election : Nalwa

Party		Candidate	Votes	%	±%
	BJP	Ranbir Singh Gangwa	47,523	41.09%	29.97
	INC	Randhir Panihar	37,851	32.72%	15.7
	JJP	Virender Choudhary	20,516	17.74%	New
	BSP	Advocate Bajrang Indal	3,510	3.03%	1.07
	Independent	Randeep Lohchab	1,828	1.58%	New
	INLD	Satpal Kajla	1,286	1.11%	34.57
Margin of victory			9,672	8.36%	2.31
Turnout			1,15,668	69.89%	7.31
Registered electors			1,65,498		8.67
	BJP gain from INLD		Swing	5.41

Ranbir Singh Gangwa Prajapati of Indian National Lok Dal won the 2014 Haryana Legislative Assembly election on 19 October 2014. He is an ex-member of parliament and a senior leader of Indian national Lokdal party. He defeated ex finance minister and sitting MLA professor Sampat Singh and ex deputy chief minister of Haryana shri Chandermohan Bishnoi with a margin of 7100 votes.

2014 Haryana Legislative Assembly election : Nalwa

Party		Candidate	Votes	%	±%
	INLD	Ranbir Singh Gangwa	41,950	35.68%	12.56
	HJC(BL)	Chander Mohan	34,835	29.63%	0.74
	INC	Sampat Singh	20,014	17.02%	23.42
	BJP	Master Hari Singh	13,074	11.12%	9.91
	BSP	Pardeep Ambedkar	2,313	1.97%	1.08
	HLP	Jai Singh Bishnoi	1,210	1.03%	New
	CPI(M)	Shankuntla Jakhar	962	0.82%	New
Margin of victory			7,115	6.05%	5.51
Turnout			1,17,582	77.20%	0.18
Registered electors			1,52,300		24.99
	INLD gain from INC		Swing	4.77

Nalwa constituency was represented by an ex-minister of Haryana and senior Congress leader of the Haryana State Assembly, Professor Sampat Singh. He won the October 2009 elections with a margin of 10,901 votes, defeating Jasma Devi of the Haryana Janhit Congress. Jasma Devi is the wife of Bhajan Lal and this was the first defeat of the Bhajanlal clan in Haryana state politics. This defeat led to the downfall of Bhajanlal's Haryana Janhit Congress in literal terms for just after winning, five out of total six MLAs of Haryana Janhit Congress left the HJC and joined the Congress.

2009 Haryana Legislative Assembly election : Nalwa

Party		Candidate	Votes	%	±%
	INC	Sampat Singh	38,138	40.45%	New
	HJC(BL)	Jasma Devi	27,237	28.88%	New
	INLD	Ranbir Singh Gangwa	21,799	23.12%	New
	BSP	Gangadhar	2,877	3.05%	New
	BJP	Madan Rawalwasia	1,144	1.21%	New
Margin of victory			10,901	11.56%
Turnout			94,295	77.38%
Registered electors			1,21,852
	INC win (new seat)

• Nalwa

28°56′N 75°49′E / 28.94°N 75.82°E / 28.94; 75.82