1986 World Junior Championships in Athletics
Track events
100 m	men	women
200 m	men	women
400 m	men	women
800 m	men	women
1500 m	men	women
3000 m		women
5000 m	men
10,000 m	men	women
100 m hurdles		women
110 m hurdles	men
400 m hurdles	men	women
2000 m steeplechase	men
4 × 100 m relay	men	women
4 × 400 m relay	men	women
5000 m walk		women
10,000 m walk	men
Road events
20 km	men
Field events
High jump	men	women
Pole vault	men
Long jump	men	women
Triple jump	men
Shot put	men	women
Discus throw	men	women
Hammer throw	men
Javelin throw	men	women
Combined events
Heptathlon		women
Decathlon	men
v t e

The men's decathlon event at the 1986 World Junior Championships in Athletics was held in Athens, Greece, at Olympic Stadium on 16 and 17 July.^[1][2] Senior implements (106.7 cm (3'6) hurdles, 7257g shot, 2 kg discus) were used.

Gold	Petri Keskitalo  Finland
Silver	Mike Smith  Canada
Bronze	Nikolay Zajats  Soviet Union

16/17 July

Rank	Name	Nationality	100m	LJ	SP	HJ	400m	110m H	DT	PV	JT	1500m	Points	Notes
	Petri Keskitalo	Finland	10.93 (w: 0.9 m/s)	7.40	13.98	1.97	50.00	15.02 (w: 0.8 m/s)	35.52	4.70	56.52	4:54.34	7623
	Mike Smith	Canada	11.11 (w: 0.8 m/s)	7.20	13.62	1.97	48.58	15.45 (w: 0.3 m/s)	38.20	3.70	60.94	4:28.95	7523
	Nikolay Zajats	Soviet Union	11.12	7.05	12.49	1.97	49.27	15.33	39.82	4.80	50.46	4:41.00	7509
4	Stefan Haigis	West Germany	11.46	6.91	13.71	1.94	50.62	15.78	41.78	4.20	62.60	4:36.37	7411
5	Michael Kühne	East Germany	11.41	6.90	12.08	1.91	49.63	15.64	38.02	4.40	56.52	4:19.31	7358
6	Oleg Semyonov	Soviet Union	10.99	6.79	13.47	1.91	50.39	15.58	44.88	4.00	59.26	4:55.85	7316
7	Antonio Peñalver	Spain	11.38	6.93	12.56	2.03	51.41	15.85	40.30	4.30	48.74	4:30.84	7229
8	Dezsö Szabó	Hungary	11.46	7.06	12.13	1.91	49.62	15.77	32.74	4.80	49.16	4:28.51	7215
9	Jari Näkki	Finland	11.35	6.61	12.49	1.94	52.41	15.38	38.82	4.50	62.12	4:48.23	7203
10	Róbert Zmelík	Czechoslovakia	11.05 w (w: 3.7 m/s)	7.22	15.15	1.94	50.19	15.16 (w: 0.4 m/s)	36.48	3.70	50.66	4:42.66	7108
11	Emilio Valle	Cuba	11.30	7.04	12.74	1.79	50.67	15.04	38.30	4.00	53.48	4:39.16	7090
12	Michael Arnold	Austria	11.40	6.87	12.68	1.97	51.65	15.16	31.96	4.20	55.00	4:45.08	7039
13	Tim Foster	Australia	11.49	6.25	12.70	1.85	50.35	15.78	36.38	4.50	56.60	4:35.82	7017
14	Csaba Fábián	Hungary	11.45	7.10	11.55	1.91	50.19	15.15	35.28	3.80	49.80	4:29.19	7007
15	Stylianos Vasilakis	Greece	11.60	6.83	13.24	1.97	51.65	16.11	36.98	4.00	48.32	4:42.81	6871
16	Even Hytten	Norway	11.49	6.69	11.67	1.91	50.19	15.88	40.30	3.40	51.22	4:30.70	6832
17	Cor Troost	Netherlands	11.18	6.33	13.26	1.85	49.71	16.66	39.86	3.60	52.84	4:37.00	6822
18	Barry Walsh	Ireland	11.70	6.49	12.90	1.97	52.08	16.14	42.30	3.80	50.40	4:47.36	6784
19	Michael Jørgensen	Denmark	11.65	6.69	11.55	1.79	50.41	16.52	36.64	4.20	57.42	4:41.35	6772
20	Stanley Verbal	United States	11.55	5.94	11.59	1.85	49.61	15.56	34.78	4.00	56.88	4:33.79	6659
21	Sean Boser	Canada	11.66	6.20	12.63	1.64	53.48	17.92	34.00	DNS	52.98	4:51.57	5527
22	Dean Torres	Ecuador	12.48	6.22	6.78	1.68	53.14	18.07	23.28	3.90	34.66	4:29.07	5250
23	Hugo Ramos	Paraguay	11.40	6.18	8.96	1.76	54.92	18.70	30.34	2.60	34.76	5:31.08	4973
	Dimítrios Gournias	Greece	11.12	7.03	11.63	1.97	DNS	DNS	DNS	DNS	DNS	DNS	DNF
	Gery Löffler	Switzerland	11.09	6.29	11.35	1.85	DNS	DNS	DNS	DNS	DNS	DNS	DNF
	Mike Beyer	East Germany	11.68	6.17	10.57	1.91	DNS	DNS	DNS	DNS	DNS	DNS	DNF
	Dionisio Lugo	Venezuela	10.96	6.54	12.09	1.64	DNS	DNS	DNS	DNS	DNS	DNS	DNF
	René Schmidheiny	Switzerland	11.42	6.45	13.07	DNS	DNS	DNS	DNS	DNS	DNS	DNS	DNF
	Dietmar Koszewski	West Germany	11.95	DNS	DNS	DNS	DNS	DNS	DNS	DNS	DNS	DNS	DNF

N.B. In the 100 meters, of the 4 heats, two were run with legal wind & two heats were run with wind above the legal limit of 2 m/s.

According to an unofficial count, 29 athletes from 21 countries participated in the event.