| 2017-18 Ranji Trophy Group A | |
| Administrator: | BCCI |
| Cricket Format: | First-class cricket |
| Tournament Format: | Round-robin |
| Host: |  India |
| Participants: | 7 |
| Previous Year: | 2016–17 |
| Previous Tournament: | 2016–17 Ranji Trophy |
The 2017–18 Ranji Trophy was the 84th season of the Ranji Trophy, the first-class cricket tournament in India. It was contested by 28 teams divided into four groups, each containing seven teams.[1] The top two teams from Group A progressed to the quarterfinals of the competition.[2] Both of Hyderabad's first two matches were abandoned due to rain.[3] Following the conclusion of the sixth round of fixtures, both Karnataka and Delhi had progressed to the knockout stage of the competition.[4]
The following teams were placed in Group A, based on their average points in the previous three years:[5]
| Team[6] | ||||||||
|---|---|---|---|---|---|---|---|---|
| Karnataka | 6 | 4 | 0 | 2 | 0 | 32 | +0.479 | |
| Delhi | 6 | 3 | 0 | 3 | 0 | 27 | +0.333 | |
| Maharashtra | 6 | 2 | 2 | 1 | 1 | 16 | +0.084 | |
| Hyderabad | 6 | 2 | 1 | 1 | 2 | 16 | –0.156 | |
| Railways | 6 | 2 | 3 | 1 | 0 | 14 | –0.312 | |
| Uttar Pradesh | 6 | 0 | 3 | 2 | 1 | 5 | +0.508 | |
| Assam | 6 | 0 | 4 | 2 | 0 | 2 | –0.977 |
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