Nelson Rocha dos Santos (born 8 May 1952) is a Brazilian former sprinter who competed in the 1980 Summer Olympics and in the 1984 Summer Olympics.^[1]

Nelson dos Santos finished fourth (1979) and sixth (1983) in the 100 metres at the Pan American Games. He was also a member of two bronze medal winning Pan American Games 4×100 metres relay teams in 1979 (with Milton de Castro, Ruy da Silva, and Altevir de Araújo Filho) and in 1983 (with João Batista da Silva, Gérson de Souza, and Róbson da Silva).

Personal Best: 100 – 10.22 (1979).

https://olympics.com/pt/atletas/nelson-rocha-rocha-dos-santos

Year	Competition	Venue	Position	Event	Notes
Representing  Brazil
1975	South American Championships	Rio de Janeiro, Brazil	2nd	100 m	10.7
			1st	4 × 100 m relay	40.8
	Pan American Games	Mexico City, Mexico	9th (sf)	100 m	10.39
			4th	4 × 100 m relay	39.18
1977	South American Championships	Montevideo, Uruguay	1st	4 × 100 m relay	41.4
1979	Pan American Games	San Juan, Puerto Rico	4th	100 m	10.33
			3rd	4 × 100 m relay	39.44
	Universiade	Mexico City, Mexico	8th (sf)	100 m	10.331
			8th	4 × 100 m relay	42.82
	World Cup	Montreal, Canada	1st	4 × 100 m relay	38.702
1980	Olympic Games	Moscow, Soviet Union	23rd (qf)	100 m	10.45
			8th	4 × 100 m relay	39.54
1983	Pan American Games	Caracas, Venezuela	6th	100 m	10.35
			3rd	4 × 100 m relay	39.08
	Ibero-American Championships	Barcelona, Spain	2nd	100 m	10.54
			3rd	4 × 100 m relay	41.00
			2nd	4 × 400 m relay	3:07.62
	South American Championships	Santa Fe, Argentina	1st	100 m	10.3
			2nd	200 m	21.5
			1st	4 × 100 m relay	40.7
1984	Olympic Games	Los Angeles, United States	29th (qf)	100 m	10.53
			8th	4 × 100 m relay	39.40

¹Did not start in the final
²Representing the Americas