1974 F1 Championship leaders

Drivers’ Championship

#	Grand Prix	Leader	Lead
1	Argentina	(NZL) Denny Hulme	3
2	Brazil	(CHE) Clay Regazzoni	1
3	South Africa	(CHE) Clay Regazzoni	1
4	Spain	(CHE) Clay Regazzoni	1
5	Belgium	(BRA) Emerson Fittipaldi	1
6	Monaco	(BRA) Emerson Fittipaldi	2
7	Sweden	(BRA) Emerson Fittipaldi	5
8	Netherlands	(BRA) Emerson Fittipaldi	1
9	France	(BRA) Emerson Fittipaldi	4
10	Britain	(AUT) Niki Lauda	1
11	Germany	(CHE) Clay Regazzoni	3
12	Austria	(CHE) Clay Regazzoni	5
13	Italy	(CHE) Clay Regazzoni	1
14	Canada	(BRA) Emerson Fittipaldi	0
15	USA	(BRA) Emerson Fittipaldi	3

← 1973 1975 →

First time as championship leader: Niki Lauda; Clay Regazzoni (first Swiss driver to lead the championship)
Last time as championship leader: Denny Hulme; Clay Regazzoni
First time as championship leader since…: 1972 for Denny Hulme
First time as championship leader by a…: Austrian driver since 1970; New Zealander driver since 1972

Constructors’ Championship

#	Grand Prix	Leader	Lead
1	Argentina	McLaren-Ford Cosworth	3
2	Brazil	McLaren-Ford Cosworth	6
3	South Africa	McLaren-Ford Cosworth	10
4	Spain	McLaren-Ford Cosworth	5
5	Belgium	McLaren-Ford Cosworth	8
6	Monaco	McLaren-Ford Cosworth	7
7	Sweden	McLaren-Ford Cosworth	10
8	Netherlands	McLaren-Ford Cosworth	3
9	France	Ferrari	2
10	Britain	McLaren-Ford Cosworth	1
11	Germany	Ferrari	8
12	Austria	Ferrari	4
13	Italy	McLaren-Ford Cosworth	2
14	Canada	McLaren-Ford Cosworth	5
15	USA	McLaren-Ford Cosworth	8

← 1973 1975 →

First time as championship leader: No constructor led the championship for the first time in 1974
Last time as championship leader: No constructor led the championship for the last time in 1974
First time as championship leader since…: 1971 for Ferrari; 1972 for McLaren