Official results for the 1990 Puducherry Legislative Assembly election. INC won the most seats with 11 out of 30.
Total seats: 30. Majority mark: 15.
| Party | Seats | Vote Share |
|---|---|---|
| INC | 11 | 25.0% |
| DMK | 9 | 24.1% |
| JD | 4 | 9.1% |
| ADMK | 3 | 18.2% |
| CPI | 2 | 5.1% |
| IND | 1 | 8.0% |
| PMK | 0 | 6.4% |
| LKD(B) | 0 | 0.1% |
| Constituency | Winner | Party | Margin % |
|---|---|---|---|
| ARIANKUPPAM | V. PETHAPERUMAL | JD | 5.3% |
| BAHOUR | S. M. THAVASU | INC | 12.4% |
| EMBALAM | M. O. H. FAROOK | INC | 12.2% |
| INDIRA NAGAR | M. MANJINI | CPI | 4.4% |
| KADIRGAMAM | R.V.JANAKIRAMAN | DMK | 3.3% |
| KALAPET | R. RAMANATHAN | DMK | 12.8% |
| KAMARAJ NAGAR | K. DEIVANAYAGAM | JD | 8.8% |
| KARAIKAL NORTH | R. KAMALAKKANNAN | IND | 3.7% |
| KARAIKAL SOUTH | M.CHANDHRAKASU | INC | 32.3% |
| LAWSPET | VE. VAITHILINGAM | INC | 31.2% |
| MAHE | A.V.SREEDHARAN | INC | 30.0% |
| MANAVELY | R VISWANATHAN | CPI | 12.2% |
| MANGALAM | C.M. ACHRAFF | INC | 4.1% |
| MANNADIPET | PALANIRAJA .G. | DMK | 11.5% |
| MUDALIARPET | M. RASAN ALIAS VAZHUMUNI | DMK | 11.1% |
| MUTHIALPET | P. RAJAVELU | JD | 21.4% |
| NEDUNGADU | S. RAMASSAMY | ADMK | 16.7% |
| NELLITHOPE | P. ANANDABASKARAN | INC | 24.0% |
| NERAVY-T.R.PATTINAM | E. VALSARAJ | INC | 20.0% |
| NETTAPAKKAM | M. VAITHILINGAM | INC | 1.0% |
| ORLEAMPETH | N. MARIMUTHU | INC | 13.4% |
| OUPALAM | D. RAMACHANDRAN | DMK | 10.4% |
| OUSSUDU | S.P. SIVAKUMAR | DMK | 2.8% |
| OZHUKARAI | N. MANIMARAN | DMK | 3.2% |
| RAJ BHAVAN | D. VISWANATHAN | ADMK | 10.5% |
| THATTANCHAVADY | A. BAKTHKAVACHALAM | JD | 3.9% |
| THIRUBHUVANAI | P. KANNAN | INC | 8.2% |
| THIRUNALLAR | V. GANAPATHY | ADMK | 6.2% |
| VILLIANUR | NAGHAMUTHU .N. | DMK | 10.4% |
| YANAM | RAKSHA HART KRISHNA | DMK | 14.9% |