diff --git a/code/game/gamemodes/miniantags/borer/borer.dm b/code/game/gamemodes/miniantags/borer/borer.dm
index f99a00567ae..750473b1dfa 100644
--- a/code/game/gamemodes/miniantags/borer/borer.dm
+++ b/code/game/gamemodes/miniantags/borer/borer.dm
@@ -394,7 +394,7 @@
 		to_chat(src, "<font color='blue'> You are feeling far too docile to do that.</font>")
 		return
 
-	var content = ""
+	var/content = ""
 
 	content += "<table>"
 
diff --git a/code/game/machinery/computer/cloning.dm b/code/game/machinery/computer/cloning.dm
index 3091caa82a2..5198a97a88c 100644
--- a/code/game/machinery/computer/cloning.dm
+++ b/code/game/machinery/computer/cloning.dm
@@ -164,7 +164,7 @@
 	data["selected_pod"] = "\ref[selected_pod]"
 	var/list/temprecords[0]
 	for(var/datum/dna2/record/R in records)
-		var tempRealName = R.dna.real_name
+		var/tempRealName = R.dna.real_name
 		temprecords.Add(list(list("record" = "\ref[R]", "realname" = sanitize(tempRealName))))
 	data["records"] = temprecords
 
diff --git a/code/game/machinery/computer/depot.dm b/code/game/machinery/computer/depot.dm
index 62c82d9bd95..9ba28094ace 100644
--- a/code/game/machinery/computer/depot.dm
+++ b/code/game/machinery/computer/depot.dm
@@ -165,7 +165,7 @@
 	alerts_when_broken = TRUE
 
 /obj/machinery/computer/syndicate_depot/selfdestruct/get_menu(mob/user)
-	var menutext = {"<B>Syndicate Depot Fusion Reactor Control</B><HR>
+	var/menutext = {"<B>Syndicate Depot Fusion Reactor Control</B><HR>
 	<BR><BR><a href='?src=[UID()];primary=1'>Disable Containment Field</a>
 	<BR>"}
 	return menutext
@@ -204,7 +204,7 @@
 	return ..()
 
 /obj/machinery/computer/syndicate_depot/shieldcontrol/get_menu(mob/user)
-	var menutext = {"<B>Syndicate Depot Shield Grid Control</B><HR>
+	var/menutext = {"<B>Syndicate Depot Shield Grid Control</B><HR>
 	<BR>"}
 	menutext += {"(SYNDI-LEADER) Whole-base Shield: [perimeterarea.shield_list.len ? "ON" : "OFF"] (<a href='?src=[UID()];primary=1'>[perimeterarea.shield_list.len ? "Disable" : "Enable"]</a>)<BR>"}
 	menutext += {"(SYNDI-LEADER) Armory Shield: [depotarea.shield_list.len ? "ON" : "OFF"] (<a href='?src=[UID()];secondary=1'>[depotarea.shield_list.len ? "Disable" : "Enable"]</a>)<BR>"}
diff --git a/code/game/objects/items/devices/radio/radio.dm b/code/game/objects/items/devices/radio/radio.dm
index 7ddf11ab451..7cf09199cfd 100644
--- a/code/game/objects/items/devices/radio/radio.dm
+++ b/code/game/objects/items/devices/radio/radio.dm
@@ -226,7 +226,7 @@ GLOBAL_LIST_INIT(default_medbay_channels, list(
 				channels[chan_name] |= FREQ_LISTENING
 		. = 1
 	else if(href_list["spec_freq"])
-		var freq = href_list["spec_freq"]
+		var/freq = href_list["spec_freq"]
 		if(has_channel_access(usr, freq))
 			set_frequency(text2num(freq))
 		. = 1
diff --git a/code/game/objects/items/weapons/RSF.dm b/code/game/objects/items/weapons/RSF.dm
index a8da7503c72..26cef27a0b4 100644
--- a/code/game/objects/items/weapons/RSF.dm
+++ b/code/game/objects/items/weapons/RSF.dm
@@ -58,7 +58,7 @@ RSF
 	if(!proximity) return
 	if(!(istype(A, /obj/structure/table) || istype(A, /turf/simulated/floor)))
 		return
-	var spawn_location
+	var/spawn_location
 	var/turf/T = get_turf(A)
 	if(istype(T) && !T.density)
 		spawn_location = T
diff --git a/code/game/objects/items/weapons/cards_ids.dm b/code/game/objects/items/weapons/cards_ids.dm
index 405ce47a033..dc26b14e24b 100644
--- a/code/game/objects/items/weapons/cards_ids.dm
+++ b/code/game/objects/items/weapons/cards_ids.dm
@@ -356,13 +356,13 @@
 
 /obj/item/card/id/syndicate/attack_self(mob/user as mob)
 	if(!src.registered_name)
-		var t = reject_bad_name(input(user, "What name would you like to use on this card?", "Agent Card name", ishuman(user) ? user.real_name : user.name))
+		var/t = reject_bad_name(input(user, "What name would you like to use on this card?", "Agent Card name", ishuman(user) ? user.real_name : user.name))
 		if(!t)
 			to_chat(user, "<span class='warning'>Invalid name.</span>")
 			return
 		src.registered_name = t
 
-		var u = sanitize(stripped_input(user, "What occupation would you like to put on this card?\nNote: This will not grant any access levels other than maintenance.", "Agent Card Job Assignment", "Agent", MAX_MESSAGE_LEN))
+		var/u = sanitize(stripped_input(user, "What occupation would you like to put on this card?\nNote: This will not grant any access levels other than maintenance.", "Agent Card Job Assignment", "Agent", MAX_MESSAGE_LEN))
 		if(!u)
 			to_chat(user, "<span class='warning'>Invalid assignment.</span>")
 			src.registered_name = ""
diff --git a/code/game/objects/items/weapons/storage/bags.dm b/code/game/objects/items/weapons/storage/bags.dm
index 4a449069d4c..6d5a192c641 100644
--- a/code/game/objects/items/weapons/storage/bags.dm
+++ b/code/game/objects/items/weapons/storage/bags.dm
@@ -421,13 +421,13 @@
 
 /obj/item/storage/bag/tray/cyborg/afterattack(atom/target, mob/user as mob)
 	if( isturf(target) || istype(target,/obj/structure/table) )
-		var foundtable = istype(target,/obj/structure/table/)
+		var/foundtable = istype(target,/obj/structure/table/)
 		if( !foundtable ) //it must be a turf!
 			for(var/obj/structure/table/T in target)
 				foundtable = 1
 				break
 
-		var turf/dropspot
+		var/turf/dropspot
 		if( !foundtable ) // don't unload things onto walls or other silly places.
 			dropspot = user.loc
 		else if( isturf(target) ) // they clicked on a turf with a table in it
@@ -437,7 +437,7 @@
 
 		overlays = null
 
-		var droppedSomething = 0
+		var/droppedSomething = 0
 
 		for(var/obj/item/I in contents)
 			I.loc = dropspot
diff --git a/code/game/objects/items/weapons/storage/storage.dm b/code/game/objects/items/weapons/storage/storage.dm
index 55b25ad725a..16bd6f4caa8 100644
--- a/code/game/objects/items/weapons/storage/storage.dm
+++ b/code/game/objects/items/weapons/storage/storage.dm
@@ -541,7 +541,7 @@
 	return depth
 
 /obj/item/storage/serialize()
-	var data = ..()
+	var/data = ..()
 	var/list/content_list = list()
 	data["content"] = content_list
 	data["slots"] = storage_slots
diff --git a/code/modules/admin/verbs/onlyone.dm b/code/modules/admin/verbs/onlyone.dm
index e51f6da991a..9f2579ad162 100644
--- a/code/modules/admin/verbs/onlyone.dm
+++ b/code/modules/admin/verbs/onlyone.dm
@@ -84,7 +84,7 @@
 		var/obj/item/slot_item_hand = H.get_item_by_slot(slot_r_hand)
 		H.unEquip(slot_item_hand)
 
-		var /obj/item/multisword/pure_evil/multi = new(H)
+		var/obj/item/multisword/pure_evil/multi = new(H)
 		H.equip_to_slot_or_del(multi, slot_r_hand)
 
 		var/obj/item/card/id/W = new(H)
diff --git a/code/modules/antagonists/_common/antag_spawner.dm b/code/modules/antagonists/_common/antag_spawner.dm
index beefc41735b..8e29326632f 100644
--- a/code/modules/antagonists/_common/antag_spawner.dm
+++ b/code/modules/antagonists/_common/antag_spawner.dm
@@ -194,7 +194,7 @@
 		to_chat(user, "<span class='notice'>The demons do not respond to your summon. Perhaps you should try again later.</span>")
 
 /obj/item/antag_spawner/slaughter_demon/spawn_antag(client/C, turf/T, type = "", mob/user)
-	var /obj/effect/dummy/slaughter/holder = new /obj/effect/dummy/slaughter(T)
+	var/obj/effect/dummy/slaughter/holder = new /obj/effect/dummy/slaughter(T)
 	var/mob/living/simple_animal/slaughter/S = new demon_type(holder)
 	S.vialspawned = TRUE
 	S.holder = holder
diff --git a/code/modules/antagonists/traitor/datum_traitor.dm b/code/modules/antagonists/traitor/datum_traitor.dm
index 957300326a6..ee23ea35d98 100644
--- a/code/modules/antagonists/traitor/datum_traitor.dm
+++ b/code/modules/antagonists/traitor/datum_traitor.dm
@@ -399,7 +399,7 @@
 	var/phrases = jointext(GLOB.syndicate_code_phrase, ", ")
 	var/responses = jointext(GLOB.syndicate_code_response, ", ")
 
-	var message = "<br><b>The code phrases were:</b> <span class='bluetext'>[phrases]</span><br>\
+	var/message = "<br><b>The code phrases were:</b> <span class='bluetext'>[phrases]</span><br>\
 					<b>The code responses were:</b> <span class='redtext'>[responses]</span><br>"
 
 	return message
diff --git a/code/modules/events/slaughterevent.dm b/code/modules/events/slaughterevent.dm
index ac265adb420..91918894cfd 100644
--- a/code/modules/events/slaughterevent.dm
+++ b/code/modules/events/slaughterevent.dm
@@ -33,7 +33,7 @@
 			spawn_locs += get_turf(player_mind.current)
 		if(!spawn_locs) //If we can't find THAT, then just retry
 			return kill()
-		var /obj/effect/dummy/slaughter/holder = new /obj/effect/dummy/slaughter(pick(spawn_locs))
+		var/obj/effect/dummy/slaughter/holder = new /obj/effect/dummy/slaughter(pick(spawn_locs))
 		var/mob/living/simple_animal/slaughter/S = new /mob/living/simple_animal/slaughter/(holder)
 		S.holder = holder
 		player_mind.transfer_to(S)
diff --git a/code/modules/mining/abandonedcrates.dm b/code/modules/mining/abandonedcrates.dm
index 9b74c922a6b..044b78a04bc 100644
--- a/code/modules/mining/abandonedcrates.dm
+++ b/code/modules/mining/abandonedcrates.dm
@@ -82,7 +82,7 @@
 			new /obj/item/clothing/head/corgi(src)
 		if(67 to 68)
 			for(var/i in 1 to rand(4, 7))
-				var /newitem = pick(subtypesof(/obj/item/stock_parts))
+				var/newitem = pick(subtypesof(/obj/item/stock_parts))
 				new newitem(src)
 		if(69 to 70)
 			new /obj/item/stack/ore/bluespace_crystal(src, 5)
diff --git a/code/modules/mob/new_player/poll.dm b/code/modules/mob/new_player/poll.dm
index 19893819e0c..2e109d36d34 100644
--- a/code/modules/mob/new_player/poll.dm
+++ b/code/modules/mob/new_player/poll.dm
@@ -90,7 +90,7 @@
 	if(adminonly)
 		question = "(<font color='#997700'>Admin only poll</font>) " + question
 
-	var output = "<!DOCTYPE html><html><body>"
+	var/output = "<!DOCTYPE html><html><body>"
 	if(polltype == POLLTYPE_MULTI || polltype == POLLTYPE_OPTION)
 		select_query = GLOB.dbcon.NewQuery("SELECT text, percentagecalc, (SELECT COUNT(optionid) FROM [format_table_name("poll_vote")] WHERE optionid = poll_option.id GROUP BY optionid) AS votecount FROM [format_table_name("poll_option")] WHERE pollid = [pollid]")
 		select_query.Execute()
diff --git a/code/modules/projectiles/guns/energy/special.dm b/code/modules/projectiles/guns/energy/special.dm
index 48aaff9d8b4..e2eb9e84057 100644
--- a/code/modules/projectiles/guns/energy/special.dm
+++ b/code/modules/projectiles/guns/energy/special.dm
@@ -424,7 +424,7 @@
 		update_icon()
 
 		if(istype(loc, /mob/living/carbon))
-			var /mob/living/carbon/M = loc
+			var/mob/living/carbon/M = loc
 			if(src == M.machine)
 				update_dat()
 				M << browse("<TITLE>Temperature Gun Configuration</TITLE><HR>[dat]", "window=tempgun;size=510x102")
diff --git a/code/modules/reagents/chemistry/recipes/slime_extracts.dm b/code/modules/reagents/chemistry/recipes/slime_extracts.dm
index b1fb33edf85..1525ed42bd3 100644
--- a/code/modules/reagents/chemistry/recipes/slime_extracts.dm
+++ b/code/modules/reagents/chemistry/recipes/slime_extracts.dm
@@ -38,7 +38,7 @@
 /datum/chemical_reaction/slimemonkey/on_reaction(datum/reagents/holder)
 	feedback_add_details("slime_cores_used","[type]")
 	for(var/i = 1, i <= 3, i++)
-		var /obj/item/reagent_containers/food/snacks/monkeycube/M = new /obj/item/reagent_containers/food/snacks/monkeycube
+		var/obj/item/reagent_containers/food/snacks/monkeycube/M = new /obj/item/reagent_containers/food/snacks/monkeycube
 		M.forceMove(get_turf(holder.my_atom))
 
 //Green