Dinalupihan, officially the Municipality of Dinalupihan (Tagalog: Bayan ng Dinalupihan; Kapampangan: Balen ning Dinalupihan), is a 1st class municipality in the province of Bataan, Philippines. According to the 2020 census, it has a population of 118,209 people.

Dinalupihan, the only landlocked town in the province, is accessible via SCTEX (Subic–Clark–Tarlac Expressway) and the Bataan Provincial Expressway, off Exit 5.

"Dinalupijan" came from the festival rites of the Aetas commemorating the deity "Indianalo", the goddess of hunting and bountiful harvest. "Indianalo" was paired with the Sanskrit word "jann", meaning paradise. "Indianalopijann" was the name given to the land that the Aetas received from their goddess which translates to Indianalo's paradise. As time passed, the name "Indianalopijann" turned into "Dinalupihan".

The name "Dinalupihan" also means "empty lands", coming from the Spanish terms din, a, and lupia. It referred to the fact that it failed to produce little revenue while it was an estate of the Archdiocese of Manila during the second half of the 18th century.

Dinalupihan borders Hermosa to the south and southeast, the province of Zambales to the northwest with the highly urbanized city of Olongapo, and the province of Pampanga to the north and northeast. Floridablanca, Pampanga, is located directly to the north, and San Fernando, Pampanga, its regional center is located to the north-northeast.

Dinalupihan is 23 kilometres (14 mi) from Balanga and 101 kilometres (63 mi) from Manila.

According to the Philippine Statistics Authority, the municipality has a land area of 92.52 square kilometres (35.72 sq mi)  constituting 6.74% of the 1,372.98-square-kilometre- (530.11 sq mi) total area of Bataan.

Dinalupihan is politically subdivided into 46 barangays. Each barangay consists of puroks and some have sitios.

PSGC	Barangay	Population			±% p.a.
		2020		2010
030804044	Aquino	0.1%	95	111	▾	−1.54%
030804002	Bangal	4.0%	4,774	4,415	▴	0.78%
030804045	Bayan‑bayanan	0.6%	728	447	▴	5.00%
030804003	Bonifacio (Poblacion)	0.4%	488	505	▾	−0.34%
030804006	Burgos (Poblacion)	0.3%	411	465	▾	−1.23%
030804007	Colo	2.7%	3,135	2,986	▴	0.49%
030804008	Daang Bago	2.4%	2,822	2,939	▾	−0.41%
030804009	Dalao	1.3%	1,573	1,303	▴	1.90%
030804010	Del Pilar (Poblacion)	0.2%	291	271	▴	0.71%
030804011	Gen. Luna (Poblacion)	0.5%	608	585	▴	0.39%
030804012	Gomez (Poblacion)	0.2%	292	324	▾	−1.03%
030804013	Happy Valley	1.5%	1,744	1,704	▴	0.23%
030804050	Jose C. Payumo, Jr.	2.8%	3,360	3,114	▴	0.76%
030804014	Kataasan	2.5%	2,990	3,015	▾	−0.08%
030804015	Layac	1.2%	1,416	1,339	▴	0.56%
030804016	Luacan	5.2%	6,184	5,779	▴	0.68%
030804018	Mabini Ext. (Poblacion)	0.6%	703	734	▾	−0.43%
030804017	Mabini Proper (Poblacion)	0.3%	324	339	▾	−0.45%
030804019	Magsaysay	1.5%	1,737	1,871	▾	−0.74%
030804046	Maligaya	1.3%	1,565	1,372	▴	1.32%
030804020	Naparing	2.3%	2,705	2,500	▴	0.79%
030804021	New San Jose	5.1%	6,012	6,030	▾	−0.03%
030804022	Old San Jose	2.0%	2,421	2,002	▴	1.92%
030804023	Padre Dandan (Poblacion)	0.1%	159	155	▴	0.26%
030804024	Pag‑asa	1.7%	1,981	2,020	▾	−0.19%
030804025	Pagalanggang	3.3%	3,931	3,512	▴	1.13%
030804047	Payangan	0.7%	770	554	▴	3.35%
030804048	Pentor	2.6%	3,041	2,934	▴	0.36%
030804026	Pinulot	3.5%	4,159	3,563	▴	1.56%
030804027	Pita	3.0%	3,578	3,513	▴	0.18%
030804029	Rizal (Poblacion)	0.2%	249	255	▾	−0.24%
030804030	Roosevelt	7.6%	9,032	8,721	▴	0.35%
030804031	Roxas (Poblacion)	0.2%	293	347	▾	−1.68%
030804032	Saguing	3.8%	4,455	3,964	▴	1.17%
030804033	San Benito	2.3%	2,739	2,394	▴	1.36%
030804034	San Isidro (Poblacion)	0.8%	983	1,047	▾	−0.63%
030804035	San Pablo	5.0%	5,942	3,736	▴	4.75%
030804036	San Ramon	3.3%	3,904	3,707	▴	0.52%
030804037	San Simon	1.5%	1,800	1,278	▴	3.48%
030804040	Santa Isabel (Tabacan)	2.0%	2,412	2,190	▴	0.97%
030804038	Santo Niño	2.7%	3,190	3,066	▴	0.40%
030804039	Sapang Balas	1.1%	1,271	942	▴	3.04%
030804041	Torres (Poblacion)	0.8%	915	862	▴	0.60%
030804049	Tubo‑tubo	0.5%	549	342	▴	4.85%
030804042	Tucop	3.6%	4,284	3,686	▴	1.51%
030804043	Zamora (Poblacion)	0.3%	356	337	▴	0.55%
	Total		118,209	97,275	▴	1.97%

Population census of Dinalupihan

Year Pop. ±% p.a. 1903 3,028 —     1918 4,319 +2.40% 1939 8,821 +3.46% 1948 14,341 +5.55% 1960 21,249 +3.33% 1970 30,509 +3.68% 1975 36,302 +3.55% 1980 41,415 +2.67%	Year Pop. ±% p.a. 1990 58,172 +3.46% 1995 65,159 +2.15% 2000 76,145 +3.40% 2007 92,289 +2.69% 2010 97,275 +1.93% 2015 106,371 +1.72% 2020 118,209 +2.10%
Source: Philippine Statistics Authority

In the 2020 census, Dinalupihan had a population of 118,209. The population density was 1,300 inhabitants per square kilometre (3,400/sq mi).

Poverty incidence of Dinalupihan

2.5 5 7.5 10 12.5 15 2006 12.60 2009 11.74 2012 5.73 2015 13.83 2018 6.35 2021 11.13 Source: Philippine Statistics Authority

Pursuant to the Local government in the Philippines", the political seat of the municipal government is located at the Municipal Town Hall. In the History of the Philippines (1521–1898), the Gobernadorcillo was the Chief Executive who held office in the Presidencia. During the American rule (1898–1946), the elected Mayor and local officials, including the appointed ones hold office at the Municipal Town Hall. The legislative and executive departments perform their functions in the Sangguniang Bayan (Session Hall) and Municipal Trial Court, respectively, and are located in the Town Hall.

Members of the Dinalupihan Municipal Council
(2022-2025)

Position	Name of official
District Representative (3rd Legislative District, Bataan)	Maria Angela Garcia
Municipal Mayor	Maria Angela S. Garcia
Municipal Vice Mayor	Renato M. Matawaran
Municipal Councilors	Charlito D. Fernandez
	Virgilio L. Alonzo
	Larry D. Bantugan
	Noel D. dela Rosa
	Noel F. del Rosario
	Guillermo C. Mendoza Jr.
	Felix R. Tutol Jr.
	Jason M. Nazareno

Dinalupihan, Bataan's incumbent mayor is Gila Garcia (NUP) and the vice mayor is Renato Matawaran (Aksyon).

Sangguniang Bayan Members are: Ricardo De Ausen, Martin Tongol Jr., Danny Dela Cruz, Rolly Buniag, Amy Sandoval, Zaldy Torno, Maning Inza Cruz, Arnold Soriano, ABC Armando Buniag and SK Ernest Estanislao.

Dinalupihan's interesting points, landmarks and festivals, are:

Saint John the Baptist Parish Church (in Poblacion) belongs to the Roman Catholic Diocese of Balanga (Dioecesis Balangensis) Part of the Ecclesiastical Province of San Fernando, Pampanga Created: March 17, 1975. Canonically Erected: November 8, 1975. Comprises the whole civil province of Bataan. Titular: St. Joseph, Husband of Mary, April 28).

Its Feast day is June 24. It is under the Vicariate of Saint Peter of Verona I - Vicariate of Our Lady, Mirror of Justice. The Catholic population is about 25,438.

• Gary David — PBA multi-awarded player
• Chito Jaime — PBA player
• Jackie Rice — Filipina actress who won the title of Ultimate Female Survivor on the third season of Startstruck.
• Felicito Payumo — Chairman of the Subic Bay Metropolitan Authority from 1998 to 2004.
• Anthony Morales — Executive Assistant of the Subic Bay Metropolitan Authority from 2015–Present.
• Tommy Peñaflor — Actor, Model, Dancer finalist of Eat Bulaga's That's My Bae.

• 
  Welcome arch of Dinalupihan Park and Plaza
• 
  World War II First Line of Defense Memorial (Battle of Bataan - Battle of Layac Junction, January 6, 1942)
• 
  Roosevelt Park is the location shooting of Enchanted Garden
• 
  Dinalupihan Civic Center
• 
  Layac Junction

• Philippine Standard Geographic Code