Stewart J. Friesen (born July 25, 1983) is a Canadian-American professional dirt track and stock car racing driver. He competes full-time in the NASCAR Craftsman Truck Series, driving the No. 52 Toyota Tundra for his own team, Halmar Friesen Racing, and part-time at local dirt tracks across New York, Pennsylvania, New Jersey, and elsewhere in the United States, driving the No. 44 car for HFR.

Friesen started racing early in life, his family owning Ransomville Speedway in Western New York. After racing go-karts, Friesen raced big-blocks with widespread success in the Northeast United States, advancing to the 2010 World Finals at Charlotte Motor Speedway. He was the 2012, 2013, 2014, and 2015 Modified track champion at Fonda Speedway.

He was one of the top competitors in the SuperDIRT Series in the mid-2010s, and he also has triumphed in the World of Outlaws sprint car series, winning over 230 career races as of the end of the 2017 season. He has won the Syracuse 200 Modified race four times. Friesen has run over 900 dirt races in his career. Eventually, he met Chris Larsen, who gave Friesen his first NASCAR ride at Eldora Speedway, which was supposed to be a one-time deal. However, the partnership blossomed into a full-time ride.

On occasion, Friesen runs NASCAR and dirt on the same day. He maintains an active presence on New York dirt tracks such as Fonda Speedway and Utica-Rome Speedway.

Breaking into NASCAR with the 2016 Aspen Dental Eldora Dirt Derby, Friesen put his No. 16 Halmar Racing truck into the twelfth starting spot on the grid by virtue of a second-place finish in his heat. However, contact with Caleb Holman ruined his night, and Friesen's debut race resulted in a 28th-place finish. Running five more races in the season, Friesen recorded three top 20 finishes, the best being a 13th at New Hampshire Motor Speedway.

On January 9, 2017, Friesen announced that he would run the full 2017 season in the Halmar Friesen Racing (HFR) No. 52 truck with Tommy Baldwin Jr. coming on as a team manager. In June, following the first seven races of the season, HFR announced it would undergo a two-week hiatus before returning at Kentucky Speedway in July. At Eldora, Friesen qualified on the pole position and remained in the place for the start of the feature after winning his heat race. He led more than half the laps and claimed the victory in the second stage but lost the lead to Matt Crafton in the closing laps, finishing a then-career-best second. About a month after Eldora run, the team took another two-race break while severing its relationship with Baldwin and making a new technical alliance with GMS Racing. After returning to competition, Friesen scored four finishes of seventh or better in the season's last six races, climbing to fourteenth in the season-ending points tally.

For 2018, HFR continued the alliance with GMS, so much so that GMS driver Johnny Sauter referenced Friesen as a teammate. After advancing to the playoffs and a best finish of second on three occasions throughout the year, he finished seventh in the final points standings after being eliminated in the Round of 8.

Friesen remained at HFR in an alliance with GMS for the third straight year in 2019. He was also contacted by JR Motorsports to run a partial schedule in the NASCAR Xfinity Series, but nothing came of it. At Kansas Speedway, Friesen led both practices, won both Stage One and Stage Two and led the most laps, but ran out of fuel with three laps to go due to a pit communication on the previous pit stop, in which the fuelman did not put enough fuel in the truck, handing the win to Ross Chastain and relegating Friesen to 15th, furthering a streak of near-misses for Friesen. On August 1, 2019, Friesen won his first career NASCAR Gander Outdoors Truck Series race at Eldora. On November 8, Friesen achieved his second career victory and his first on a paved track by winning at Phoenix after passing Brandon Jones with four laps remaining. As a result, Friesen qualified for the Championship 4 for the first time but ultimately finished 11th at Homestead and fourth in the final standings.

After missing the playoffs in 2020, Friesen later abandoned a full-time Truck schedule and skipped a race at Kansas Speedway in order to run the Short Track Super Series at Port Royal Speedway. On the night of the Kansas truck event, Friesen finished second to Mat Williamson in a $53,000-to-win race at Port Royal.

Friesen returned with his No. 52 team to the Truck Series full-time in 2021, and despite having a worse season and missing the playoffs in 2020, HFR remained with Toyota. Later in the year, Friesen would make his debut in the NASCAR Cup Series, driving the No. 77 for Spire Motorsports in the series' new dirt race at Bristol. Despite driving a Toyota in the Truck Series, Friesen drove for Spire, a Chevrolet team, in this one race. He finished 23rd, one lap down. Despite not winning a Truck race for the second straight season, Friesen made the Playoffs, scored his best of 2nd in the season finale at Phoenix, and finished sixth in the final standings.

On May 20, 2022, Friesen broke a 54-race winless streak in the Truck Series by scoring his third career victory at Texas after passing Christian Eckes for the lead in Overtime.

Friesen grew up in Niagara-on-the-Lake, Ontario, and played hockey as a child. He attended the University of Windsor, attaining a degree in science.

Friesen is married to Jessica Friesen (née Zemken). The two have one son. Friesen and his wife also run a t-shirt printing business (One-Zee Tees), which was originally a fallback plan in case racing did not work out. They live in Sprakers, New York. Like her husband, Jessica also is a dirt racing driver and she attempted to make her Truck Series debut in a second HFR truck, the No. 62, at the Bristol dirt race in 2021. However, she failed to qualify after the qualifying heat races were canceled due to rain.

(key) (Bold – Pole position awarded by qualifying time. Italics – Pole position earned by points standings or practice time. * – Most laps led. Small number below track name denotes finishing position.)

NASCAR Cup Series results
Year	Team	No.	Make	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	NCSC	Pts	Ref
2021	Spire Motorsports	77	Chevy	DAY	DRC	HOM	LVS	PHO	ATL	BRD 23	MAR	RCH	TAL	KAN	DAR	DOV	COA	CLT	SON	NSH	POC	POC	ROA	ATL	NHA	GLN	IRC	MCH	DAY	DAR	RCH	BRI	LVS	TAL	ROV	TEX	KAN	MAR	PHO	55th	0

NASCAR Craftsman Truck Series results
Year	Team	No.	Make	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	NCTC	Pts	Ref
2016	Halmar Racing	16	Chevy	DAY	ATL	MAR	KAN	DOV	CLT	TEX	IOW	GTW	KEN	ELD 28	POC	BRI 22	MCH	MSP	CHI	NHA 13	LVS 19	TAL	MAR	TEX	PHO 18	HOM 29	33rd	69
2017	Halmar Friesen Racing	52		DAY 31	ATL 19	MAR 25	KAN 32	CLT 23	DOV 28	TEX 22	GTW	IOW	KEN 12	ELD 2*	POC 12	MCH 13	BRI 29	MSP	CHI	NHA 5	LVS 23	TAL 17	MAR 6	TEX 14	PHO 6	HOM 7	14th	422
2018				DAY 27	ATL 6	LVS 5	MAR 20	DOV 23	KAN 3	CLT 6	TEX 2	IOW 9	GTW 13	CHI 19	KEN 2	ELD 3	POC 4	MCH 8	BRI 2	MSP 7	LVS 17	TAL 6	MAR 11	TEX 8	PHO 5	HOM 4	7th	2265
2019				DAY 10	ATL 18	LVS 4	MAR 5	TEX 2	DOV 12	KAN 15*	CLT 3	TEX 20	IOW 5	GTW 3	CHI 3	KEN 2	POC 32	ELD 1	MCH 8	BRI 4	MSP 7	LVS 19	TAL 5	MAR 6	PHO 1	HOM 11	4th	4026
2020			Toyota	DAY 21	LVS 9	CLT 30	ATL 10	HOM 14	POC 8	KEN 15	TEX 4	KAN 27	KAN 34	MCH 39	DRC 10	DOV 9	GTW 5	DAR 8	RCH 10	BRI 32	LVS 4	TAL 17	KAN	TEX 28	MAR 6	PHO 6	15th	504
2021				DAY 32	DRC 11	LVS 4	ATL 10	BRD 12	RCH 13	KAN 14	DAR 25	COA 17	CLT 4	TEX 34	NSH 5	POC 33	KNX 27	GLN 20	GTW 4	DAR 3	BRI 4	LVS 6	TAL 22	MAR 17	PHO 2		6th	2275
2022				DAY 16	LVS 3	ATL 6*	COA 9	MAR 13	BRD 11	DAR 12	KAN 14	TEX 1*	CLT 9	GTW 4	SON 31	KNX 5	NSH 5	MOH 4	POC 14	IRP 4	RCH 11	KAN 20	BRI 7	TAL 20	HOM 3	PHO 5	6th	2276
2023				DAY 28	LVS 14	ATL 22	COA 14	TEX 3	BRD 23	MAR 31	KAN 4	DAR 2	NWS 13	CLT 22	GTW 3	NSH 18	MOH 4	POC 32	RCH 27	IRP 30	MLW 30	KAN 7	BRI 14	TAL 34	HOM 6	PHO 24	12th	537
2024				DAY 14	ATL 23	LVS 18	BRI 22	COA 20	MAR 19	TEX 13	KAN 25	DAR 14	NWS 10	CLT 2	GTW 8	NSH 11	POC 7	IRP 33	RCH 25	MLW 20	BRI 9	KAN 24	TAL 13	HOM 6	MAR 10	PHO	-*	-*

Season still in progress
Ineligible for series points

NASCAR Pinty's Series results
Year	Team	No.	Make	1	2	3	4	5	6	7	8	9	10	11	12	13	NPSC	Pts	Ref
2022	22 Racing	22	Chevy	SUN	MSP	ACD	AVE	TOR	EDM	SAS	SAS	CTR	OSK 2	ICAR	MSP	DEL	39th	42

• Official website
• Stewart Friesen driver statistics at Racing-Reference