| Date: | 28 March – 2 April |
| Edition: | 15th |
| Draw: | 32S / 16D |
| Surface: | Hard |
| Prize Money: | $75,000+H |
| Location: | León, Mexico |
| Champs: |  Adrián Menéndez Maceiras |
| Champd: |  Leander Paes /  Adil Shamasdin |
The 2017 Torneo Internacional Challenger León was a professional tennis tournament played on hard courts. It was the fifteenth edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in León, Mexico between 28 March and 2 April 2017.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Dominican Republic | Víctor Estrella Burgos | 91 | 1 | |
| Ernesto Escobedo | 108 | 2 | ||
| Canada | Vasek Pospisil | 119 | 3 | |
| Stefan Kozlov | 122 | 4 | ||
 Brazil | João Souza | 123 | 5 | |
| Tennys Sandgren | 161 | 6 | ||
 Russian Federation | Teymuraz Gabashvili | 164 | 7 | |
| Jason Jung | 170 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw as a special exempt:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
See main article: 2017 Torneo Internacional Challenger León – Singles.
Adrián Menéndez Maceiras def. 
Roberto Quiroz 6–4, 3–6, 6–3.See main article: 2017 Torneo Internacional Challenger León – Doubles.
Leander Paes / Adil Shamasdin def. Luca Margaroli / Caio Zampieri 6–1, 6–4.
