The third federal electoral district of Chiapas (Distrito electoral federal 03 de Chiapas) is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of 13 such districts in the state of Chiapas.

It elects one deputy to the lower house of Congress for each three-year legislative period by means of the first-past-the-post system. Votes cast in the district also count towards the calculation of proportional representation ("plurinominal") deputies elected from the third region.

Under the 2022 districting plan, which is to be used for the 2024, 2027 and 2030 federal elections, the third district of Chiapas covers five municipalities in the east of the state:

• Benemérito de las Américas, Chilón, Marqués de Comillas, Ocosingo and Sitalá.

The district's head town (cabecera distrital), where results from individual polling stations are gathered together and collated, is the city of Ocosingo.

With Indigenous and Afrodescendent inhabitants accounting for over 82% of its population, it is officially classified by the National Electoral Institute (INE) as an indigenous district.

2017–2022

In the 2017 plan, the district had the same configuration as at present.

2005–2017

The third district was located in the extreme east of the state and covered much of the Lacandon Jungle. It comprised the municipalities of Altamirano, Benemérito de las Américas, Chanal, Las Margaritas, Maravilla Tenejapa, Marqués de Comillas, Ocosingo and Oxchuc.

1996–2005

Between 1996 and 2005, the third district was broadly the same as under the 2005 scheme, with the following differences:

• Chanal was a part of the eighth district.
• The third district also included San Juan Cancuc and Sitalá.
• Benemérito de las Américas, Maravilla Tenejapa and Marqués de Comillas had not yet been given municipal status; however, they belonged to the municipality of Ocosingo and so were therefore included in the district.

1978–1996

The districting scheme in force from 1978 to 1996 was the result of the 1977 electoral reforms, which increased the number of single-member seats in the Chamber of Deputies from 196 to 300. Under that plan, Chiapas's seat allocation rose from six to nine. The third district had its head town at Comitán de Domínguez and it covered 15 municipalities.

National parties
Current
	PAN
	PRI
	PT
	PVEM
	MC
	Morena
Defunct or local only
	PLM
	PNR
	PRM
	PP
	PPS
	PARM
	PFCRN
	Convergencia
	PANAL
	PSD
	PES
	PRD

Third federal electoral district of Chiapas

Election	Deputy	Party	Term	Legislature
1976	Homero Tovilla Cristiani		1976–1979	50th Congress
1979	Leyver Martínez González		1979–1982	51st Congress
1982	Homero Tovilla Cristiani		1982–1985	52nd Congress
1985	Homero Díaz Córdova		1985–1988	53rd Congress
1988	José Javier Culebro Siles		1988–1991	54th Congress
1991	Juan Carlos Bonifaz Trujillo		1991–1994	55th Congress
1994	Alí Cancino Herrera		1994–1997	56th Congress
1997	Norberto Sántiz López		1997–2000	57th Congress
2000	Santiago López Hernández		2000–2003	58th Congress
2003	Juan Antonio Gordillo		2003–2006	59th Congress
2006	Elmar Díaz Solórzano		2006–2009	60th Congress
2009	Luis Hernández Cruz		2009–2012	61st Congress
2012	Amílcar Villafuerte Trujillo		2012–2015	62nd Congress
2015	Jorge Álvarez López		2015–2018	63rd Congress
2018	Alfredo Vázquez Vázquez		2018–2021	64th Congress
2021	Alfredo Vázquez Vázquez		2021–2024	65th Congress
2024	Alfredo Vázquez Vázquez		2024–2027	66th Congress

16°54′N 92°05′W / 16.900°N 92.083°W / 16.900; -92.083