Boys' singles
1999 French Open
Champion	Guillermo Coria
Runner-up	David Nalbandian
Score	6–4, 6–3

Fernando González was the defending champion, but did not compete this year.

Argentine Guillermo Coria won the tournament without dropping a set, defeating compatriot David Nalbandian in the final, 6–4, 6–3.

Draw

Finals

	Quarterfinals							Semifinals							Final
		Tommy Robredo	7	6
		Todor Enev	5	4
									Tommy Robredo	3	2
									David Nalbandian	6	6
		David Nalbandian	6	4	6
		Éric Prodon	4	6	4
																David Nalbandian	4	3
																Guillermo Coria	6	6
		Guillermo Coria	7	7
		Irakli Labadze	6	6
									Guillermo Coria	6	6
									Igor Kunitsyn	3	4
		Igor Kunitsyn	6	7
		Feliciano López	4	6

Top half

Section 1

	First round							Second round							Third round							Quarterfinals
		Tommy Robredo	3	6	7
		Cristian Villagrán	6	2	5				T Robredo	6	6
	Q	Julien Cassaigne	6	6				Q	J Cassaigne	1	3
		Boris Pašanski	3	0												T Robredo	7	6
	Q	Phillip Harboe	3	2												M Fish	6	0
		Olivier Ramos	6	6					O Ramos	2	5
		Mardy Fish	7	3	6				M Fish	6	7
		Olivier Rochus	5	6	2																		T Robredo	7	6
		Thiago Alves	3	1																			T Enev	5	4
		Todor Enev	6	6					T Enev	6	6
		Hayato Furukawa	3	4					D Meffert	3	2
		Dominik Meffert	6	6												T Enev	1	6	6
		Cătălin Gârd	3	3												F Volandri	6	4	0
		Julien Benneteau	6	6					J Benneteau	1	4
	Q	Sergei Pozdnev	1	0					F Volandri	6	6
		Filippo Volandri	6	6

Section 2

	First round							Second round							Third round							Quarterfinals
		David Nalbandian	6	6
	LL	Diogo Cruz	3	1					D Nalbandian	4	7	10
		Andrew McDade	2	5					F Vatin	6	5	8
		François Vatin	6	7												D Nalbandian	6	6
		Michael Lammer	4	6	4											L Zovko	4	2
	Q	Sergey Vassine	6	2	6			Q	S Vassine	7	2	0
		Joachim Johansson	4	2					L Zovko	6	6	6
		Lovro Zovko	6	6																			D Nalbandian	6	4	6
		Jarkko Nieminen	6	6																			É Prodon	4	6	4
		Andy Roddick	3	0					J Nieminen	6	6
		Daniel Langre	3	4					F Hemmes Jr.	2	4
		Fred Hemmes Jr.	6	6												J Nieminen	5	5
		Karol Beck	3	6	6											É Prodon	7	7
		Simon Dickson	6	2	1				K Beck	4	4
		Jakub Hašek	3	2					É Prodon	6	6
		Éric Prodon	6	6

Bottom half

Section 3

	First round							Second round							Third round							Quarterfinals
		Guillermo Coria	6	6
		Jean-Julien Rojer	1	4					G Coria	6	6
		Vitali Chvets	6	6					V Chvets	2	1
		Julien Maes	4	2												G Coria	6	7
		Wong Wing-luen	1	5												J de Armas	2	5
		Ladislav Chramosta	6	7					L Chramosta	3	4
		Julio Peralta	5	0					J de Armas	6	6
		José de Armas	7	6																			G Coria	7	7
		Stefan Wauters	6	4	7																		I Labadze	6	6
		Jean-Christophe Faurel	4	6	5				S Wauters	4	1
		Mario Ančić	6	7					M Ančić	6	6
		Levar Harper-Griffith	1	6												M Ančić	4	4
		Francesco Aldi	6	6												I Labadze	6	6
	Q	Christophe de Veaux	3	3					F Aldi	3	4
	Q	Filip Prpic	7	1	1				I Labadze	6	6
		Irakli Labadze	6	6	6

Section 4

	First round							Second round							Third round							Quarterfinals
		Igor Kunitsyn	6	6
		Aleksander Vlaski	2	1					I Kunitsyn	3	6	6
		Timo Nieminen	7	5	6				T Nieminen	6	2	3
	Q	Stian Boretti	6	7	3											I Kunitsyn	7	3	6
		Antonio Pastorino	6	6												U Vico	6	6	7r
		Nicolas Mahut	4	3					A Pastorino	4	1
		Markus Polessnig	6	4					U Vico	6	6
		Uros Vico	7	6																			I Kunitsyn	6	7
		Feliciano López	6	3	17																		F López	4	6
		Thierry Ascione	4	6	15				F López	7	6
		David Martin	5	6	4			Q	J Fröberg	6	3
	Q	Jonas Fröberg	7	3	6											F López	6	3	12
		Maximilian Abel	6	5												K Pless	4	6	10
		Florent Serra	7	7					F Serra	6	1	4
		Roko Karanušić	7	2	3				K Pless	3	6	6
		Kristian Pless	6	6	6

References

• Main Draw