The following organizational charts are sourced from a mysterious Persian-language document uploaded to a file-hosting site in 2011, and posted on a handful of military forums including Arteshi.com and military.ir.
The author is unknown and there are no references for any of its claims. Thus, the credability of this document is questionable. Despite the need for caution, the information presented is largely consistent with verified formations and the inaccuracies that do exist (ex: claimed location of the 71st MIB) have been observed elsewhere, indicating that the claims, at the very least, have not simply been drawn from thin air.
Unfortunately, this report dates from before the Samen al-Alaeme restructuring plan and thus reflects a divisional, rather than brigade-based, system. It is also unclear to what degree the following charts attempt to represent actual hierarchies, or are simply groupings based on type.
The charts have been edited for clarity and aesthetic appearance, but their substance remains largely unaltered. There is, as always, a significant risk of losing meaning through translation. For instance, basic-training centers are titled "cultural training centers", which likely has a specific meaning divorced from the typical use of 'culture' in a defense-context (soft war).
1) Organization Overview
2) General Staff
3) Regional Operations Headquarters
4) Combat Units
5) Branch Training Centers
6) Basic Training Centers
7) Artillery Groups
8) Engineering, Communications, and Chemical Weapon [-Defense] Groups
9) Army Aviation Bases / Command
10) Material & Logistics Support Regions / Command
11) Healthcare Command
12) Manpower Department
13) Training Department
14) Planning and Programs Department
15) Combat Grouping
16) Combat Support Grouping
17) Combat Service Support Grouping
(As always, for full size & detail --> right click, 'view image')