Roberto Maytín and Hans Podlipnik-Castillo are the defending champions, but Maytín has partnered with Miguel Ángel Reyes-Varela and Podlipnik-Castillo has chosen not to participate . Roberto Maytín and Miguel Ángel Reyes-Varela are defeated by Ariel Behar and Giovanni Lapentti in the quarterfinals .
| Doubles | |
|---|---|
| 2016 Milex Open | |
| Champions |  Ariel Behar Giovanni Lapentti |
| Runners-up |  Jonathan Eysseric Franko Škugor |
| Score | 7–5 , 6–4 |
Ariel Behar and Giovanni Lapentti went on to win the title, defeating Jonathan Eysseric and Franko Škugor in the final 7–5, 6–4 .
Seeds edit
Julio Peralta / 
Horacio Zeballos (first round)
Purav Raja / 
Ruan Roelofse (first round)
Roberto Maytín / 
Miguel Ángel Reyes-Varela (quarterfinals)
Marcelo Arévalo / 
Sergio Galdós (quarterfinals)
Draw edit
Key edit
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- SE = Special exempt
- PR = Protected ranking
- ITF = ITF entry
- JE = Junior exempt
- w/o = Walkover
- r = Retired
- d = Defaulted
- SR = Special ranking
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 |  J Peralta H Zeballos
| 4 | 4 | ||||||||||||||||||||||||
| J Eysseric F Škugor
| 6 | 6 | J Eysseric F Škugor
| 7 | 4 | [10] | |||||||||||||||||||||
 A González LD Martínez
| 7 | 6 | A González LD Martínez
| 5 | 6 | [8] | |||||||||||||||||||||
 A Ghem N Kicker
| 5 | 3 | J Eysseric F Škugor
| 6 | 4 | [10] | |||||||||||||||||||||
| 4 |  M Arévalo S Galdós
| 6 | 6 | WC |  C Díaz-Figueroa M Estévez
| 2 | 6 | [3] | |||||||||||||||||||
| WC | N Jarry J Olivares
| 4 | 2 | 4 | M Arévalo S Galdós
| 2 | 6 | [6] | |||||||||||||||||||
| G Andreozzi J Hernández-Fernández
| 6 | 1 | [7] | WC | C Díaz-Figueroa M Estévez
| 6 | 3 | [10] | |||||||||||||||||||
| WC | C Díaz-Figueroa Maximiliano Estévez
| 2 | 6 | [10] | J Eysseric F Škugor
| 5 | 4 | ||||||||||||||||||||
| A Behar G Lapentti
| 6 | 7 | A Behar G Lapentti
| 7 | 6 | ||||||||||||||||||||||
| PR |  R Ramírez Hidalgo P Riba
| 2 | 5 | A Behar G Lapentti
| 7 | 6 | |||||||||||||||||||||
| WC | N Hardt P Torebko
| 3 | 2 | 3 | R Maytín MÁ Reyes-Varela
| 5 | 4 | ||||||||||||||||||||
| 3 | R Maytín MÁ Reyes-Varela
| 6 | 6 | A Behar G Lapentti
| 64 | 6 | [10] | ||||||||||||||||||||
| R Carballés Baena O Roca Batalla
| 6 | 6 |  J Cerretani V Hănescu
| 77 | 4 | [7] | |||||||||||||||||||||
 J Kovalík A Martin
| 3 | 4 | R Carballés Baena O Roca Batalla
| 4 | 4 | ||||||||||||||||||||||
| J Cerretani V Hănescu
| 6 | 1 | [10] | J Cerretani V Hănescu
| 6 | 6 | |||||||||||||||||||||
| 2 |  P Raja R Roelofse
| 4 | 6 | [4] | |||||||||||||||||||||||