1990 World Junior Championships in Athletics – Women's 100 metres

Final

9 August
Wind: +0.9 m/s

Rank	Name	Nationality	Time	Notes
	Andrea Philipp	East Germany	11.36
	Nikole Mitchell	Jamaica	11.47
	Lucrécia Jardim	Portugal	11.52
4	Zundra Feagin	United States	11.55
5	Merlene Frazer	Jamaica	11.64
6	Diane Smith	United Kingdom	11.70
6	Katja Seidel	West Germany	11.70
8	Katharine Merry	United Kingdom	11.71

Semifinals

9 August

Semifinal 1

Wind: -1.3 m/s

Rank	Name	Nationality	Time	Notes
1	Zundra Feagin	United States	11.69	Q
2	Katharine Merry	United Kingdom	11.81	Q
3	Cathy Freeman	Australia	11.87
4	Sanna Hernesniemi	Finland	11.96
5	Briar Toop	New Zealand	11.97
6	Victoria Ljungberg	Sweden	12.04
7	Yelena Dubtsova	Soviet Union	12.10
	Bernice Ferreira	Brazil	DNS

Semifinal 2

Wind: +1.1 m/s

Rank	Name	Nationality	Time	Notes
1	Lucrécia Jardim	Portugal	11.59	Q
2	Merlene Frazer	Jamaica	11.73	Q
3	Monique Bogaards	Netherlands	11.78
4	Tisha Prather	United States	11.79
5	Annie Claude Lafontaine	France	11.81
6	Nadine Halliday	Canada	11.92
7	Melinda Gainsford	Australia	11.93
8	Petya Pendareva	Bulgaria	12.04

Semifinal 3

Wind: +1.0 m/s

Rank	Name	Nationality	Time	Notes
1	Andrea Philipp	East Germany	11.36	Q
2	Nikole Mitchell	Jamaica	11.37	Q
3	Katja Seidel	West Germany	11.56	q
4	Diane Smith	United Kingdom	11.61	q
5	Chandra Sturrup	Bahamas	11.62
6	Carla Popa	Romania	11.80
7	Yelena Fyodorovich	Soviet Union	11.81
8	Gabriella Szabó	Hungary	11.88

Heats

8 August

Heat 1

Wind: -0.1 m/s

Rank	Name	Nationality	Time	Notes
1	Zundra Feagin	United States	11.59	Q
2	Nikole Mitchell	Jamaica	11.61	Q
3	Katharine Merry	United Kingdom	11.71	Q
4	Annie Claude Lafontaine	France	11.85	q
5	Melinda Gainsford	Australia	11.87	q
6	Georgia Paspalli	Cyprus	12.22
7	Deirdre Caruana	Malta	13.08

Heat 2

Wind: -0.5 m/s

Rank	Name	Nationality	Time	Notes
1	Tisha Prather	United States	11.76	Q
2	Monique Bogaards	Netherlands	11.80	Q
3	Cathy Freeman	Australia	11.81	Q
4	Gabriella Szabó	Hungary	11.96	q
5	Petya Pendareva	Bulgaria	12.02	q
6	Sandrine Hennart	Belgium	12.18
7	Stalo Konstantinou	Cyprus	12.29
8	Nadine Benoit	Mauritius	12.40

Heat 3

Wind: -0.4 m/s

Rank	Name	Nationality	Time	Notes
1	Merlene Frazer	Jamaica	11.66	Q
2	Sanna Hernesniemi	Finland	11.77	Q
3	Carla Popa	Romania	11.89	Q
4	Yelena Fyodorovich	Soviet Union	11.91	q
5	Denisse Sharpe	Argentina	12.27
6	Ute Dallner	Austria	12.28
7	Rosanna Browne	Anguilla	12.46

Heat 4

Wind: -1.3 m/s

Rank	Name	Nationality	Time	Notes
1	Lucrécia Jardim	Portugal	11.60	Q
2	Andrea Philipp	East Germany	11.61	Q
3	Katja Seidel	West Germany	11.77	Q
4	Chandra Sturrup	Bahamas	11.79	q
5	Katarzyna Zakrzewska	Poland	12.33
6	Begoña Yúdice	Spain	12.33
7	Dagmar Hölbl	Austria	12.58

Heat 5

Wind: -0.2 m/s

Rank	Name	Nationality	Time	Notes
1	Diane Smith	United Kingdom	11.80	Q
2	Briar Toop	New Zealand	11.84	Q
3	Nadine Halliday	Canada	11.88	Q
4	Yelena Dubtsova	Soviet Union	11.90	q
5	Victoria Ljungberg	Sweden	11.91	q
6	Bernice Ferreira	Brazil	12.04	q
7	Gaby Baumann	West Germany	12.12
8	Alicia Valentin	Spain	12.28

According to an unofficial count, 37 athletes from 28 countries participated in the event.