Grand Prix Portugal 1988 merupakan balapan F1 yang digelar di sirkuit Estoril pada 25 September 1988. Balapan ini dimenangi oleh Alain Prost dari McLaren.^[1]

Pos	No	Pembalap	Konstruktor	Lap	Waktu/Tersingkir	Grid	Poin
1	11	Alain Prost	McLaren-Honda	70	1:37:40.958	1	9
2	16	Ivan Capelli	March-Judd	70	+ 9.553	3	6
3	20	Thierry Boutsen	Benetton-Ford	70	+ 44.619	13	4
4	17	Derek Warwick	Arrows-Megatron	70	+ 1:07.419	10	3
5	27	Michele Alboreto	Ferrari	70	+ 1:11.884	7	2
6	12	Ayrton Senna	McLaren-Honda	70	+ 1:18.269	2	1
7	36	Alex Caffi	Dallara-Ford	69	+ 1 Lap	17
8	24	Luis Perez-Sala	Minardi-Ford	68	+ 2 Lap	19
9	14	Philippe Streiff	AGS-Ford	68	+ 2 Lap	21
10	25	René Arnoux	Ligier-Judd	68	+ 2 Lap	23
11	31	Gabriele Tarquini	Coloni-Ford	65	+ 5 Lap	26
12	21	Nicola Larini	Osella	63	+ 7 Lap	25
Ret	15	Maurício Gugelmin	March-Judd	59	Mesin	5
Ret	5	Nigel Mansell	Williams-Judd	54	Melintir	6
Ret	3	Jonathan Palmer	Tyrrell-Ford	53	Overheating	22
Ret	19	Alessandro Nannini	Benetton-Ford	52	Handling	9
Ret	28	Gerhard Berger	Ferrari	35	Melintir	4
Ret	1	Nelson Piquet	Lotus-Honda	34	Kopling	8
Ret	6	Riccardo Patrese	Williams-Judd	29	Radiator	11
Ret	23	Pierluigi Martini	Minardi-Ford	27	Mesin	14
Ret	29	Yannick Dalmas	Larrousse-Ford	20	Alternator	15
Ret	2	Satoru Nakajima	Lotus-Honda	16	Melintir	16
Ret	22	Andrea de Cesaris	Rial-Ford	11	Halfshaft	12
Ret	18	Eddie Cheever	Arrows-Megatron	10	Turbo	18
Ret	30	Philippe Alliot	Larrousse-Ford	7	Mesin	20
Ret	26	Stefan Johansson	Ligier-Judd	4	Mesin	24
DNQ	4	Julian Bailey	Tyrrell-Ford
DNQ	9	Piercarlo Ghinzani	Zakspeed
DNQ	33	Stefano Modena	Euro Brun-Ford
DNQ	10	Bernd Schneider	Zakspeed
DNPQ	32	Oscar Larrauri	Euro Brun-Ford