diff --git a/common/religion/holy_site_types/00_holy_site_types.txt b/common/religion/holy_site_types/00_holy_site_types.txt
index aab7b8df5..53616813a 100644
--- a/common/religion/holy_site_types/00_holy_site_types.txt
+++ b/common/religion/holy_site_types/00_holy_site_types.txt
@@ -2940,6 +2940,60 @@ berestye = {
 		tolerance_advantage_mod = 5
 	}
 }
+# chalden
+mosul = {
+	county = c_mosul
+	barony = b_mosul
+
+	character_modifier = {
+		name = holy_site_mosul_effect_name
+		church_holding_build_gold_cost = -0.10
+		monthly_piety_gain_mult = 0.10
+	}
+}
+
+nineveh = {
+	county = c_ninive
+	barony = b_ninawa
+
+	character_modifier = {
+		name = holy_site_nineveh_effect_name
+		monthly_piety_gain_mult = 0.05
+		development_growth_factor = 0.05
+	}
+}
+
+urmiya = {
+	county = c_urmiya
+	barony = b_urmiya
+
+	character_modifier = {
+		name = holy_site_urmiya_effect_name
+		learning = 1
+		monthly_piety_gain_mult = 0.10
+	}
+}
+ctesiphon = {
+	county = c_baghdad
+	barony = b_an-nahrawan
+
+	character_modifier = {
+		name = holy_site_ctesiphon_effect_name
+		monthly_prestige_gain_mult = 0.10
+		learning = 1
+	}
+}
+
+nasibin = {
+	county = c_nasibin
+	barony = b_nasibin
+
+	character_modifier = {
+		name = holy_site_nasibin_effect_name
+		learning_per_piety_level = 1
+		monthly_piety_gain_mult = 0.05
+	}
+}
 
 # Baltic
 
diff --git a/common/religion/religion_types/NEOW_catholic.txt b/common/religion/religion_types/NEOW_catholic.txt
index 5cc61ccd5..fc5f3437f 100644
--- a/common/religion/religion_types/NEOW_catholic.txt
+++ b/common/religion/religion_types/NEOW_catholic.txt
@@ -1,4 +1,4 @@
-catholic_religion = {
+catholic_religion = {
 	family = rf_abrahamic
 
 	doctrine_background_icon = core_tenet_banner_catholic.dds
@@ -1248,6 +1248,39 @@
 				ReligiousHeadTitleName = orthodox_religious_head_title_name		
 			}
 		}
+
+		chaldean = { 
+			color = { 168 121 52 }
+			icon = chaldean
+
+			religious_head = d_chaldean_hof
+
+			holy_site = mosul
+			holy_site = ctesiphon
+			holy_site = nineveh
+			holy_site = nasibin
+			holy_site = urmiya
+
+			doctrine = special_doctrine_independent_catholic
+
+			doctrine = doctrine_pluralism_pluralistic
+			doctrine = doctrine_clerical_function_alms_and_pacification
+			doctrine = doctrine_clerical_succession_spiritual_appointment
+
+			# Tenets
+			doctrine = tenet_catholic_communion
+			doctrine = tenet_monasticism
+			doctrine = tenet_communal_identity
+
+			# Coronations
+			doctrine = doctrine_imperial_anointment
+
+			localization = {
+				ReligiousHeadName = chaldean_religious_head_title
+				ReligiousHeadTitleName = chaldean_religious_head_title_name
+
+			}
+		}
 		greek_catholic = {
 			color = { 204 153 229 }
 			icon = greek_catholic
diff --git a/common/scripted_triggers/00_clothing_triggers.txt b/common/scripted_triggers/00_clothing_triggers.txt
index 9579efef9..5bd880332 100644
--- a/common/scripted_triggers/00_clothing_triggers.txt
+++ b/common/scripted_triggers/00_clothing_triggers.txt
@@ -3064,6 +3064,7 @@ portrait_religious_catholic_trigger = {
 
 portrait_religious_orthodox_trigger = {
 	OR = {
+		faith = faith:chaldean
 		faith = faith:greek_catholic
 		religion = religion:eastern_orthodox_religion
 		religion = religion:oriental_orthodox_religion 
diff --git a/gfx/interface/icons/faith/chaldean.dds b/gfx/interface/icons/faith/chaldean.dds
new file mode 100644
index 000000000..06ec5195e
--- /dev/null
+++ b/gfx/interface/icons/faith/chaldean.dds
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:62955b6e085666499294f979197d47e485c609da7341da92b846dd201270005d
+size 10128
diff --git a/history/provinces/e_mashriq.txt b/history/provinces/e_mashriq.txt
index 0d12993f9..9b22a9d70 100644
--- a/history/provinces/e_mashriq.txt
+++ b/history/provinces/e_mashriq.txt
@@ -11,7 +11,7 @@
 	
 	# Misc
 	culture = assyrian
-	religion = majlisi
+	religion = chaldean 
 }
 
 # 4812 - FISHABUR
@@ -138,7 +138,7 @@
 	
 	# Misc
 	culture = assyrian
-	religion = majlisi
+	religion = chaldean 
 }
 
 # 4845 - NASIBIN
@@ -158,7 +158,7 @@
 # 4848 - SINJAR
 4848 = {	#Misc
 	culture = assyrian
-	religion = majlisi
+	religion = chaldean 
 }
 
 # 4849 - AL-HAYYAL
@@ -201,7 +201,7 @@
 	
 	#Misc
 	culture = assyrian
-	religion = majlisi
+	religion = chaldean 
 	
 	# History
 
@@ -1315,7 +1315,7 @@
 # 4835 - TAKRIT
 4835 = {	#Misc
 	culture = assyrian
-	religion = majlisi
+	religion = chaldean 
 	
 	# History
 	
diff --git a/localization/english/replace/religion/zz_NEOW_holy_sites_l_english.yml b/localization/english/replace/religion/zz_NEOW_holy_sites_l_english.yml
index cc36464ac..94e406d05 100644
--- a/localization/english/replace/religion/zz_NEOW_holy_sites_l_english.yml
+++ b/localization/english/replace/religion/zz_NEOW_holy_sites_l_english.yml
@@ -459,3 +459,19 @@
 
  holy_site_neow_gandzasar_name:0 "Gandzasar"
  holy_site_neow_gandzasar_effect_name:0 "From [holy_site|E] #weak ($holy_site_neow_gandzasar_name$)#!"
+ 
+ holy_site_mosul_name:0 "Mosul"
+ holy_site_mosul_effect_name:0 "From [holy_site|E] #weak ($holy_site_mosul_name$)#!"
+
+ holy_site_ctesiphon_name:0 "Seleucia-Ctesiphon"
+ holy_site_ctesiphon_effect_name:0 "From [holy_site|E] #weak ($holy_site_ctesiphon_name$)#!"
+
+ holy_site_nineveh_name:0 "Nineveh"
+ holy_site_nineveh_effect_name:0 "From [holy_site|E] #weak ($holy_site_nineveh_name$)#!"
+
+ holy_site_nasibin_name:0 "Nisibis"
+ holy_site_nasibin_effect_name:0 "From [holy_site|E] #weak ($holy_site_nasibin_name$)#!"
+
+ holy_site_urmiya_name:0 "Urmia"
+ holy_site_urmiya_effect_name:0 "From [holy_site|E] #weak ($holy_site_urmiya_name$)#!"
+ 
\ No newline at end of file
diff --git a/localization/english/replace/religion/zz_NEOW_religion_catholic_l_english.yml b/localization/english/replace/religion/zz_NEOW_religion_catholic_l_english.yml
index 2237479ea..bc04afc86 100644
--- a/localization/english/replace/religion/zz_NEOW_religion_catholic_l_english.yml
+++ b/localization/english/replace/religion/zz_NEOW_religion_catholic_l_english.yml
@@ -105,4 +105,12 @@
 
  CATACLYSM_GLOSS:0 "The Orthodox term for the [Concept('neow_the_event','Event')|E]. From the Greek word 'kataklysmós' for the Deluge of the Old Testament."
 
- head_of_faith_pope:0 "Pope"
\ No newline at end of file
+ head_of_faith_pope:0 "Pope"
+ 
+ chaldean:0 "Chaldean Catholic Church"
+ chaldean_adj:0 "Chaldean"
+ chaldean_adherent:0 "Chaldean Catholic"
+ chaldean_adherent_plural:0 "Chaldean Catholic"
+ chaldean_desc:0 "The Chaldean Catholic Church is the heir of the ancient Church of the East. Before the [Concept('neow_the_event','Event')|E], Assyrian Christians were divided among many differing groups. When the old world fell into chaos, the schismatic Catholicos-Patriarch was far across the sea, while the surviving bishops and monasteries of Mesopotamia were cut off from their former hierarchies. In time, the local East-Syriac communities gathered around the Chaldean patriarchal line in Baghdad, and the old divisions faded into a single Church. Although the restored Church preserves the Catholic inheritance of the Chaldeans, centuries of isolation have made its Catholicos-Patriarch effectively independent of distant disputes over the Roman See, while still preserving the Christian inheritance of Assyria."
+ chaldean_religious_head_title:0 "Catholicos-Patriarch"
+ chaldean_religious_head_title_name:0 "Chaldean Patriarchate"
\ No newline at end of file
diff --git a/localization/english/replace/titles_l_english.yml b/localization/english/replace/titles_l_english.yml
index 90dd7caad..464f9b19d 100644
--- a/localization/english/replace/titles_l_english.yml
+++ b/localization/english/replace/titles_l_english.yml
@@ -27579,6 +27579,9 @@
  d_armenian_apostolic:0 "Mother See"
  d_armenian_apostolic_adj:0 "Armenian"
  d_armenian_apostolic_article:0 "the "
+ d_chaldean_hof:0 "Chaldean Patriarchate"
+ d_chaldean_hof_adj:0 "Patriarchal"
+ d_chaldean_hof_article:0 "the "
  
  k_rumistan:0 "Rumistan"
  k_rumistan_adj:0 "Rumi"