diff --git a/Crystal/AbbreviationPeriods.yml b/Crystal/AbbreviationPeriods.yml
new file mode 100644
index 0000000..2ea4188
--- /dev/null
+++ b/Crystal/AbbreviationPeriods.yml
@@ -0,0 +1,6 @@
+extends: existence
+message: "Don't use periods with abbreviations such as '%s'."
+level: error
+nonword: true
+tokens:
+  - '\b(?:[A-Z]\.){3,}'
diff --git a/fixtures/AbbreviationPeriods/.vale.ini b/fixtures/AbbreviationPeriods/.vale.ini
new file mode 100644
index 0000000..ae43297
--- /dev/null
+++ b/fixtures/AbbreviationPeriods/.vale.ini
@@ -0,0 +1,6 @@
+StylesPath = ../../
+
+MinAlertLevel = suggestion
+
+[*.md]
+Crystal.AbbreviationPeriods = YES
diff --git a/fixtures/AbbreviationPeriods/test.md b/fixtures/AbbreviationPeriods/test.md
new file mode 100644
index 0000000..e01f93d
--- /dev/null
+++ b/fixtures/AbbreviationPeriods/test.md
@@ -0,0 +1,4 @@
+# Abbreviation Periods
+
+It is a good practice to serve your site on H.T.T.P.S.
+The Mayan civilization had its origins around 2000 B.C.
diff --git a/test/parameters/AbbreviationPeriods/index.js b/test/parameters/AbbreviationPeriods/index.js
new file mode 100644
index 0000000..52839d5
--- /dev/null
+++ b/test/parameters/AbbreviationPeriods/index.js
@@ -0,0 +1,6 @@
+export default [
+	"AbbreviationPeriods",
+	`
+	test.md:3:45:Crystal.AbbreviationPeriods:Don't use periods with abbreviations such as 'H.T.T.P.S.'.
+	`
+];
diff --git a/test/parameters/index.js b/test/parameters/index.js
index 8e45acb..d60c5cb 100644
--- a/test/parameters/index.js
+++ b/test/parameters/index.js
@@ -1,3 +1,4 @@
+import AbbreviationPeriods from "./AbbreviationPeriods/index.js";
 import AMPM from "./AMPM/index.js";
 import Contractions from "./Contractions/index.js";
 import Ellipsis from "./Ellipsis/index.js";
@@ -12,6 +13,7 @@ import SentenceLength from "./SentenceLength/index.js";
 import Space from "./Space/index.js";
 
 export default [
+	AbbreviationPeriods,
 	AMPM,
 	Contractions,
 	Ellipsis,