1978 ATP Challenger Series
The ATP Challenger Series is the second-tier tour for professional tennis organised by the Association of Tennis Professionals. The 1978 ATP Challenger Series calendar comprises 18 tournaments with prize money of $25,000. The American leg of the tour was known as the AMEX Challenger Circuit.
Statistical information
These tables present the number of singles and doubles total number of titles a singles > doubles hierarchy; 3) alphabetical order.Titles won by nation
| Total | Nation | S | D |
| 20 |  United States |