San Francisco 49ers Interception Percentage Leaders

Career totals with the 49ers and the best single seasons in club history. Includes the 2026 season through October 19: these records are rebuilt every night, so a mark set yesterday is here this morning. The club's AAFC seasons (1946-1949) are not in these totals, as the NFL's record book does not count them; they are under the AAFC.

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Colin Kaepernick holds the 49ers career record with 1.8% interception percentage. The single-season record is 1.1%, by Alex Smith in 2011.

YDS TD RTG Y/A CMP% Y/G CMP ATT 1D TD% INT INT% SK

Rate records use the league's own minimums: a season needs 14 pass attempts per team game with the club, a career 1,500+ pass attempts with the club.

All-time 49ers leaders

Career totals with the club

#	Player	With the club	INT%	G
1	Colin Kaepernick	2011–2016	1.8%	67
2	Steve Young	1987–1999	2.4%	150
3	Jeff Garcia	1999–2003	2.4%	74
4	Brock Purdy	2022–2026	2.6%	55
5	Jimmy Garoppolo	2017–2022	2.6%	57
6	Joe Montana	1979–1992	2.7%	167
7	Alex Smith	2005–2012	2.9%	80
8	John Brodie	1957–1973	5.0%	201
9	Y.A. Tittle	1951–1960	6.1%	112

Single-season 49ers records

Best seasons in club history

#	Player	Season	INT%	G
1	Alex Smith	2011	1.1%	16
2	Colin Kaepernick	2016	1.2%	11
3	Jimmy Garoppolo	2022	1.3%	11
4	Steve Young	1997	1.7%	15
5	Steve Bono	1991	1.7%	9
6	Steve Young	1992	1.7%	16
7	Jeff Garcia	2000	1.8%	16
8	Jeff Garcia	2002	1.9%	16
9	Steve Young	1996	1.9%	12
10	Colin Kaepernick	2013	1.9%	16
11	Colin Kaepernick	2015	2.1%	9
12	Joe Montana	1989	2.1%	13
13	Mac Jones	2025	2.1%	11
14	Colin Kaepernick	2014	2.1%	16
15	Steve Young	1994	2.2%	16
16	Joe Montana	1984	2.3%	16
17	Steve Young	1998	2.3%	15
18	Joe Montana	1983	2.3%	16
19	Jeff Garcia	2001	2.4%	16
20	Joe Montana	1981	2.5%	16
21	Steve Young	1995	2.5%	11
22	Brock Purdy	2023	2.5%	16
23	Blaine Gabbert	2015	2.5%	8
24	Joe Montana	1988	2.5%	14
25	Joe Montana	1985	2.6%	15