The 2023 pitchers for the Cubs included Adbert Alzolay, Javier Assad, Brad Boxberger, Steven Brault and Ben Brown.

	NO.	NAME	POS	HEIGHT	WEIGHT	DOB	AGE	BIRTHPLACE
1	73	Adbert Alzolay A. Alzolay	P	6'1"	208	3/1/1995	28	Puerto Ordaz, Venezuela
2	72	Javier Assad J. Assad	P	6'1"	200	7/30/1997	25	Tijuana, Mexico
3	25	Brad Boxberger B. Boxberger	P	5'10"	211	5/27/1988	35	Fullerton, CA
4	25	Steven Brault S. Brault	P	6'0"	195	4/29/1992	31	La Mesa, CA
5		Ben Brown B. Brown	P	6'6"	210	9/9/1999	23	East Setauket, NY
6	49	Nick Burdi N. Burdi	P	6'3"	225	1/19/1993	30	Hinsdale, IL
7	74	José Cuas J. Cuas	P	6'3"	195	6/28/1994	29	Santo Domingo, Dominican Republic
8	65	Tyler Duffey T. Duffey	P	6'3"	220	12/27/1990	32	Houston, TX
9	51	Anderson Espinoza A. Espinoza	P	6'0"	160	3/9/1998	25	Caracas, Venezuela
10	56	Jeremiah Estrada J. Estrada	P	6'1"	185	11/1/1998	24	Indio, CA
11	32	Michael Fulmer M. Fulmer	P	6'3"	224	3/15/1993	30	Oklahoma City, OK
12	51	Shane Greene S. Greene	P	6'4"	200	11/17/1988	34	Clermont, FL
13	28	Kyle Hendricks K. Hendricks	P	6'3"	190	12/7/1989	33	Newport Beach, CA
14	12	Codi Heuer C. Heuer	P	6'5"	200	7/3/1996	26	Missoula, MT
15	47	Brandon Hughes B. Hughes	P	6'2"	215	12/1/1995	27	Sterling Heights, MI
16		Ryan Jensen R. Jensen	P	6'0"	180	11/23/1997	25	Monterey, CA
17	46	Anthony Kay A. Kay	P	6'0"	225	3/21/1995	28	Stony Brook, NY
18	45	Caleb Kilian C. Kilian	P	6'4"	180	6/2/1997	26	Anaheim, CA
19	38	Mark Leiter Jr. M. Leiter Jr.	P	6'0"	210	3/13/1991	32	Fort Lauderdale, FL
20	43	Luke Little L. Little	P	6'8"	220	8/30/2000	22	Charlotte, NC
21	61	Brailyn Marquez B. Marquez	P	6'4"	185	1/30/1999	24	Santo Domingo, Dominican Republic
22	66	Julian Merryweather J. Merryweather	P	6'4"	215	10/14/1991	31	Berkeley, CA
23	48	Daniel Palencia D. Palencia	P	5'11"	160	2/5/2000	23	San Carlos, Venezuela
24	21	Ethan Roberts E. Roberts	P	5'10"	180	7/4/1997	25	Spart, TN
25	39	Manuel Rodríguez M. Rodríguez	P	5'11"	205	8/6/1996	26	Merida, Mexico