- Source: 2006 Davis Cup Americas Zone Group III
The Group III tournament was held on June 14–18, in Maya Country Club, Santa Tecla, El Salvador on outdoor clay courts.
Format
The eight teams were split into two groups and played in a round-robin format. The top two teams of each group advanced to the promotion pool, from which the two top teams were promoted to the Americas Zone Group II in 2007. The last two placed teams of each group from the preliminary round were relegated into the relegation pool, from which the two bottom teams were relegated to the Americas Zone Group IV in 2007.
Pool A
= Trinidad and Tobago vs. Honduras
== Bahamas vs. Puerto Rico
== Trinidad and Tobago vs. Bahamas
== Puerto Rico vs. Honduras
== Trinidad and Tobago vs. Puerto Rico
== Bahamas vs. Honduras
=Pool B
= Cuba vs. El Salvador
== Haiti vs. Costa Rica
== Cuba vs. Costa Rica
== El Salvador vs. Haiti
== Cuba vs. Haiti
== El Salvador vs. Costa Rica
=Promotion pool
The top two teams from each of Pools A and B advanced to the Promotion pool. Results and points from games against the opponent from the preliminary round were carried forward.
(scores in italics carried over from Groups)
El Salvador and Cuba promoted to Group II in 2007.
= Bahamas vs. El Salvador
== Puerto Rico vs. Cuba
== Bahamas vs. Cuba
== El Salvador vs. Puerto Rico
=Relegation pool
The bottom two teams from Pools A and B were placed in the relegation group. Results and points from games against the opponent from the preliminary round were carried forward.
(scores in italics carried over from Groups)
Trinidad & Tobago and Honduras relegated to Group IV in 2007.
= Trinidad and Tobago vs. Haiti
== Costa Rica vs. Honduras
== Trinidad and Tobago vs. Costa Rica
== Haiti vs. Honduras
=Final standings
El Salvador and Cuba promoted to Group II in 2007.
Trinidad and Tobago and Honduras relegated to Group IV in 2007.