NASCAR Seri Grand National musim 1966

NASCAR Seri Grand National musim 1966 adalah musim ke-18 kejuaraan NASCAR seri utama yang diadakan di Amerika Serikat. Musim dimulai pada 14 November 1965 dengan Georgia Cracker 300 dan berakhir pada 30 Oktober 1966 dengan American 500. David Pearson memenangkan kejuaraan.

Rekapitulasi musim

No.	Tanggal	Lomba	Sirkuit	Pemenang	Kedua	Ketiga
1	14-nov	Georgia Cracker 300	Augusta Speedway1	Richard Petty	Bobby Isaac	Ned Jarrett
2	23-jan	Motor Trend 500	Riverside International Raceway	Dan Gurney	David Pearson	Paul Goldsmith
3	25-feb	Daytona 500 Qualifier #1	Daytona International Speedway	Paul Goldsmith	Richard Petty	Don White
4	25-feb	Daytona 500 Qualifier #2	Daytona International Speedway	Earl Balmer	Jim Hurtubise	Dick Hutcherson
5	27-feb	Daytona 500	Daytona International Speedway	Richard Petty	Cale Yarborough	David Pearson
6	13-mrt	Peach Blossom 500	North Carolina Speedway	Paul Goldsmith	Cale Yarborough	Bobby Allison
7	20-mrt	Southeastern 400	Bristol Motor Speedway	Dick Hutcherson	Paul Lewis	James Hylton
8	27-mrt	Atlanta 500	Atlanta Motor Speedway	Jim Hurtubise	Fred Lorenzen	Dick Hutcherson
9	3-apr	Hickory 250	Hickory Motor Speedway	David Pearson	Curtis Turner	Bobby Isaac
10	7-apr	Columbia 200	Columbia Speedway	David Pearson	Paul Goldsmith	Tom Pistone
11	9-apr	Greenville 200	Greenville-Pickens Speedway	David Pearson	Richard Petty	Tiny Lund
12	11-apr	Race 12	Bowman Gray Stadium	David Pearson	Tom Pistone	Richard Petty
13	17-apr	Gwyn Staley 400	North Wilkesboro Speedway	Jim Paschal	G.C. Spencer	David Pearson
14	24-apr	Virginia 500	Martinsville Speedway	Jim Paschal	Paul Goldsmith	Richard Petty
15	30-apr	Rebel 400	Darlington Raceway	Richard Petty	Paul Goldsmith	David Pearson
16	7-mei	Tidewater 250	Langley Field Speedway	Richard Petty	James Hylton	Neil Castles
17	10-mei	Speedy Morelock 200	Middle Georgia Raceway	Richard Petty	Tom Pistone	Bobby Allison
18	13-mei	Independent 250	Starlite Speedway2	Darel Dieringer	Clyde Lynn	Wendell Scott
19	15-mei	Richmond 250	Richmond International Raceway	David Pearson	Richard Petty	J.T. Putney
20	22-mei	World 600	Charlotte Motor Speedway	Marvin Panch	G.C. Spencer	Don White
21	29-mei	Race 21	Dog Track Speedway3	David Pearson	Tiny Lund	James Hylton
22	2-jun	Asheville 300	New Asheville Speedway	David Pearson	J.T. Putney	John Sears
23	4-jun	Race 23	Piedmont Interstate Fairgrounds	Elmo Langley	Neil Castles	Doug Cooper
24	9-jun	East Tennessee 200	Smoky Mountain Raceway	David Pearson	Buck Baker	Paul Lewis
25	12-jun	Fireball 300	Asheville-Weaverville Speedway	Richard Petty	David Pearson	Paul Lewis
26	15-jun	Beltsville 200	Beltsville Speedway	Tiny Lund	James Hylton	Hank Thomas
27	25-jun	Pickens 200	Greenville-Pickens Speedway	David Pearson	Tom Pistone	Elmo Langley
28	4-jul	Firecracker 400	Daytona International Speedway	Sam McQuagg	Darel Dieringer	Jim Paschal
29	7-jul	Race 29	Old Dominion Speedway4	Elmo Langley	John Sears	James Hylton
30	10-jul	Race 30	Bridgehampton Raceway5	David Pearson	James Hylton	Marvin Panch
31	12-jul	Race 31	Oxford Plains Speedway6	Bobby Allison	Tiny Lund	Richard Petty
32	14-jul	Race 32	Fonda Speedway7	David Pearson	Richard Petty	Rene Charland
33	16-jul	Race 33	Islip Speedway	Bobby Allison	James Hylton	Ned Jarrett
34	24-jul	Volunteer 500	Bristol Motor Speedway	Paul Goldsmith	Richard Petty	David Pearson
35	28-jul	Smokey Mountain 200	Smoky Mountain Raceway	Paul Lewis	David Pearson	J.T. Putney
36	30-jul	Nashville 400	Music City Motorplex	Richard Petty	Buck Baker	Bobby Allison
37	7-aug	Dixie 400	Atlanta Motor Speedway	Richard Petty	Buddy Baker	Sam McQuagg
38	18-aug	Sandlapper 200	Columbia Speedway	David Pearson	Richard Petty	Curtis Turner
39	21-aug	Western North Carolina 500	Asheville-Weaverville Speedway	Darel Dieringer	G.C. Spencer	James Hylton
40	24-aug	Maryland 200	Beltsville Speedway	Bobby Allison	Elmo Langley	James Hylton
41	27-aug	Myers Brothers 250	Bowman Gray Stadium	David Pearson	Richard Petty	James Hylton
42	5-sep	Southern 500	Darlington Raceway	Darel Dieringer	Richard Petty	David Pearson
43	9-sep	Buddy Shuman 250	Hickory Motor Speedway	David Pearson	Richard Petty	Paul Lewis
44	11-sep	Capital City 300	Richmond International Raceway	David Pearson	Buck Baker	Paul Lewis
45	18-sep	Joe Weatherly 150	Occoneechee Speedway	Dick Hutcherson	David Pearson	Paul Lewis
46	25-sep	Old Dominion 500	Martinsville Speedway	Fred Lorenzen	Darel Dieringer	Bobby Allison
47	2-okt	Wilkes 400	North Wilkesboro Speedway	Dick Hutcherson	David Pearson	Paul Lewis
48	16-okt	National 500	Charlotte Motor Speedway	LeeRoy Yarbrough	Darel Dieringer	Paul Goldsmith
49	30-okt	American 500	North Carolina Speedway	Fred Lorenzen	Don White	Ned Jarrett

• ¹ Dua belas balapan diadakan antara tahun 1962 dan 1969 di Augusta di Augusta Speedway.
• ² Balapan satu kali diadakan pada tahun 1966 di [[Monroe, North Carolina]|Monroe]] di Starlite Speedway.
• ³ Tujuh balapan diadakan di Currituck County antara tahun 1962 dan 1966 di Dog Track Speedway.
• ⁴ Tujuh balapan diadakan antara tahun 1958 dan 1966 di Manassas di Old Dominion Speedway.
• ⁵ Empat balapan diadakan di Bridgehampton di Bridgehampton Raceway antara tahun 1958 dan 1966.
• ⁶ Antara tahun 1966 dan 1968, tiga balapan diadakan di Oxford, Maine di Oxford Plains Speedway.
• ⁷ Empat balapan diadakan antara tahun 1955 dan 1968 di Fonda, Montgomery County di Fonda Speedway.