| # | Name | Pts | Country |
| 1951. | shriram4 | 2546 | |
| 1952. | shriya r | 2160 | |
| 1953. | sicilianmaster1234 | 60 | |
| 1954. | sidatyelghassem | 844 | |
| 1955. | siddhantssalunke12 | 20 | |
| 1956. | siddharth sanjoy | 148 | |
| 1957. | siddhpoonja | 24 | |
| 1958. | sideshowbob | 60 |
|
| 1959. | sidharths | 958 |
|
| 1960. | sidved | 194 | |
| 1961. | sietze y | 430 |
|
| 1962. | sigchris | 32 |
|
| 1963. | sigis | 40 | |
| 1964. | silberherz | 60 | |
| 1965. | silent_knight123 | 196 | |
| 1966. | silvercrestus | 384 | |
| 1967. | simon_a | 38 | |
| 1968. | simon_rindler | 20 | |
| 1969. | simongwerder1 | 126 | |
| 1970. | simonmatejka | 450 | |
| 1971. | simplebry | 110 | |
| 1972. | simulecreator | 156 | |
| 1973. | sinisa1985 | 298 | |
| 1974. | sinisterhikaru | 14 |
|
| 1975. | sirius1504 | 3744 |
| # | Name | Pts | Country |
| 1976. | sivamurugan | 194 | |
| 1977. | sj_chess | 22 | |
| 1978. | sjanda | 50 | |
| 1979. | skipper_chess | 60 | |
| 1980. | sknexus | 122 | |
| 1981. | sks1130 | 2544 |
|
| 1982. | skursad | 104 |
|
| 1983. | skyeblue132 | 40 |
|
| 1984. | sl chess academy | 2946 | |
| 1985. | sleepyholow | 378 | |
| 1986. | slurfi | 130 | |
| 1987. | slychops | 164 | |
| 1988. | smays | 62 | |
| 1989. | smk1711 | 176 | |
| 1990. | smuis | 294 | |
| 1991. | smyslow | 36 |
|
| 1992. | sn0w_leopard | 582 |
|
| 1993. | sneaky1234 | 10 | |
| 1994. | snehaprabu_1 | 442 | |
| 1995. | snehkumar | 30 | |
| 1996. | sohamshete18 | 7434 | |
| 1997. | solinae | 4444 | |
| 1998. | soltis7 | 38 | |
| 1999. | somaclava | 162 | |
| 2000. | sorenchesscoach | 52 |