The opening Friday practice for the 2014 Spanish Grand Prix would again see Williams Martini driver Felipe Nasr take over the driving duties from team-mate Valtteri Bottas. He would be joined by Felipe Massa. For this weekend Pirelli had brought their medium and hard tyres to this demanding circuit. The Williams team,
like most other teams, had come prepared with a range of upgrades. With the start of the ninety minute session it would be Massa out first for the team followed shortly after by Nasr. As the drivers completed their installation laps they would pit with Ericsson coming in first. The first driver to set a time would be Kvyat with a 1m:37.986.

Both Williams drivers would pit followed by the rest of the field. Kvyat had lowered his time to a 1m:36.471 prior to pitting. With twenty five minutes of the session complete it would be Hamilton fastest, 1m:28.028, from Rosberg and Alonso. For Williams Nasr was in sixth with a time of 1m:29.457 and Massa eighth, 1m:29.866. For the Williams team the session would see them focus on aero work. As the session progressed comments concerning the FW36 seemed to indicate that the car is struggling at the rear end.

The session would end with Massa in tenth, 1m:28.791, and Nasr fourteenth, 1m:29.272. Quickest at the end of the session was Hamilton, 1m:27.023, from Button, Ricciardo, Alonso, Rosberg, Raikkonen, Magnussen, Maldonado, and Perez ninth.

Pos Driver           	Team		      Time      Laps
 1. Lewis Hamilton      Mercedes              1:27.023s 17
 2. Jenson Button       McLaren-Mercedes      1:27.891s 26
 3. Daniel Ricciardo    Red Bull-Renault      1:27.973s 21
 4. Fernando Alonso     Ferrari               1:28.128s 23
 5. Nico Rosberg        Mercedes              1:28.168s 9
 6. Kimi Raikkonen      Ferrari               1:28.337s 19
 7. Kevin Magnussen     McLaren-Mercedes      1:28.423s 27
 8. Pastor Maldonado    Lotus-Renault         1:28.744s 34
 9. Sergio Perez        Force India-Mercedes  1:28.779s 18
10. Felipe Massa        Williams-Mercedes     1:28.791s 13
11. Daniil Kvyat        Toro Rosso-Renault    1:28.792s 24
12. Nico Hulkenberg     Force India-Mercedes  1:28.828s 17
13. Jean-Eric Vergne    Toro Rosso-Renault    1:28.859s 24
14. Felipe Nasr         Williams-Mercedes     1:29.272s 15
15. Adrian Sutil        Sauber-Ferrari        1:29.688s 16
16. Jules Bianchi       Marussia-Ferrari      1:29.820s 22
17. Romain Grosjean     Lotus-Renault         1:29.444s 21
18. Giedo van der Garde Sauber-Ferrari        1:30.440s 21
19. Max Chilton         Marussia-Ferrari      1:30.748s 19
20. Sebastian Vettel    Red Bull-Renault      1:30.942s 4
21. Kamui Kobayashi     Caterham-Renault      1:30.997s 22
22. Marcus Ericsson     Caterham-Renault      1:31.421s 22