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

It elects one deputy to the lower house of Congress for each three-year legislative session 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 second region.

Under the 2022 districting plan, which is to be used for the 2024, 2027 and 2030 federal elections and which gave Coahuila an additional district, the third district comprises 13 municipalities in the central-eastern portion of the state: Abasolo, Allende, Candela, Castaños, Escobedo, Guerrero, Hidalgo, Juárez, Monclova, Progreso, Sabinas, San Juan de Sabinas and Villa Unión. The district's head town (cabecera distrital), where results from individual polling stations are gathered together and collated, is the city of Monclova.

2005–2017

Between 2005 and 2017, the district was located in the central-eastern portion of the state and covered the municipalities of Abasolo, Arteaga, Candela, Castaños, Escobedo, General Cepeda, Juárez, Monclova, Progreso, Ramos Arizpe, Sabinas and Sacramento. The head town was the city of Monclova.

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 Coahuila

Election	Deputy	Party	Term	Legislature
1916 [es]	José María Rodríguez [es]		1916–1917	Constituent Congress of Querétaro
1917	Aarón Sáenz	PLC	1917–1918	27th Congress
1918	Alfredo Breceda Mercado [es]		1918–1920	28th Congress
1920	Francisco Guerrero V.		1920–1922	29th Congress
1922 [es]	Otilio González		1922–1924	30th Congress
1924	Candor Guajardo		1924–1926	31st Congress
1926	Manuel Mijares V.	PLN	1926–1928	32nd Congress
1928	Manuel Mijares V.	PLN	1928–1930	33rd Congress
1930	Alfredo I. Moreno		1930–1932	34th Congress
1932	Francisco Saracho		1932–1934	35th Congress
1934	Delfín Cepeda		1934–1937	36th Congress
1937	Damián L. Rodríguez		1937–1940	37th Congress
1940	Arturo Carranza		1940–1943	38th Congress
1943	Raúl López Sánchez [es]		1943–1946	39th Congress
1946	José de Jesús Urquizo		1946–1949	40th Congress
1949	Fernando Vargas Meza		1949–1952	41st Congress
1952	Antonio Marmolejo Barrera		1952–1955	42nd Congress
1955	Jesús Rodríguez Silva		1955–1958	43rd Congress
1958	Pablo Orozco Escobar		1958–1961	44th Congress
1961	Félix de la Rosa Sánchez		1961–1964	45th Congress
1964	Francisco Padilla Rodríguez		1964–1967	46th Congress
1967	Juan Manuel Berlanga García		1967–1970	47th Congress
1970	Aureliano Cruz Juárez		1970–1973	48th Congress
1973	Arnoldo Villarreal Zertuche		1973–1976	49th Congress
1976	Fernando Cabrera Rodríguez		1976–1979	50th Congress
1979	Rafael Ibarra Chacón		1979–1982	51st Congress
1982	Enrique Neavez Muñiz		1982–1985	52nd Congress
1985	Daniel Castaño de la Fuente		1985–1988	53rd Congress
1988	Benigno Gil de los Santos		1988–1991	54th Congress
1991	Fidel Hernández Puente		1991–1994	55th Congress
1994	Miguel Ángel García García		1994–1997	56th Congress
1997	Martha Laura Carranza Aguayo		1997–2000	57th Congress
2000	Óscar Maldonado Domínguez		2000–2003	58th Congress
2003	Ricardo Rodríguez Rocha		2003–2006	59th Congress
2006	Rolando Rivero Rivero		2006–2009	60th Congress
2009	Melchor Sánchez de la Fuente		2009–2012	61st Congress
2012	Mario Alberto Dávila Delgado		2012–2015	62nd Congress
2015	María Guadalupe Oyervides Valdez		2015–2018	63rd Congress
2018	Melba Farías Zambrano [es]		2018–2021	64th Congress
2021	Cristina Amezcua González [es]		2021–2024	65th Congress
2024	Theodoros Kalionchiz de la Fuente		2024–2027	66th Congress

26°54′N 101°25′W / 26.900°N 101.417°W / 26.900; -101.417