The ninth federal electoral district of Chiapas (Distrito electoral federal 09 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 this district also count towards the calculation of proportional representation ("plurinominal") deputies elected from the third region. ^{[1] [2]}

The ninth district was established as part of the 1977 electoral reforms. Under the 1975 districting plan, Chiapas had only six congressional districts; ^[3] under the 1977 reforms, the number increased to nine. ^[4] The newly created ninth district elected its first deputy, to the 51st Congress, in the 1979 legislative election.

Under the 2022 districting plan, which is to be used for the 2024, 2027 and 2030 federal elections, ^[5] Chiapas's ninth district comprises 168 electoral sections in the municipality of Tuxtla Gutiérrez. ^[6] The district's head town (cabecera distrital), where results from individual polling stations are gathered together and collated, is the state capital, Tuxtla Gutiérrez. ^[7]

2017–2022

Between 2017 and 2022, the 9th district covered 201 electoral sections in Tuxtla Gutiérrez. ^[8]

2005–2017

In 2005–2017, the district covered the north-eastern section of the municipality of Tuxtla Gutiérrez, approximating to the eastern half of the city together with a portion of its rural hinterland. The head town was the city of Tuxtla Gutiérrez. ^[9]

1996–2005

Between 1996 and 2005, the district covered the whole of the municipality of Tuxtla Gutiérrez, with the city serving as the head town. ^[10]

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. ^[3] The new ninth district had its head town at Ocosingo and it covered 18 municipalities. ^[11]

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

Ninth federal electoral district of Chiapas

Election	Deputy	Party	Legislature	Term
1979	César Augusto Santiago Ramírez [12]		51st Congress	1979–1982
1982	Eloy Morales Espinosa [ es] [13]		52nd Congress	1982–1985
1985	Sergio Valls Hernández [14]		53rd Congress	1985–1988
1988	Arely Madrid Tovilla [15]		54th Congress	1988–1991
1991	Octavio Elías Albores Cruz [16]		55th Congress	1991–1994
1994	Lázaro Hernández Vázquez [17]		56th Congress	1994–1997
1997	Carlos Morales Vázquez [18]		57th Congress	1997–2000
2000	Enoch Araujo Sánchez [19]		58th Congress	2000–2003
2003	Francisco Rojas Toledo [20]		59th Congress	2003–2006
2006	Carlos Morales Vázquez [21]		60th Congress	2006–2009
2009	Ariel Gómez León [22]		61st Congress	2009–2012
2012	María Pariente Gavito [23]		62nd Congress	2012–2015
2015	Emilio Enrique Salazar Farías [24]		63rd Congress	2015–2018
2018	Leticia Arlett Aguilar Molina [25]		64th Congress	2018–2021
2021	Adriana Bustamante Castellanos [26]		65th Congress	2021–2024
2024	Guillermo Santiago Rodríguez [ es] [27]		66th Congress	2024–2027

16°45′N 93°07′W / 16.750°N 93.117°W / 16.750; -93.117