diff --git a/lib/collection/variable-scope.js b/lib/collection/variable-scope.js
index bab70895c..64f8759d9 100644
--- a/lib/collection/variable-scope.js
+++ b/lib/collection/variable-scope.js
@@ -111,6 +111,10 @@ _.inherit((
         if (mutations) {
             this.mutations = new MutationTracker(mutations);
         }
+
+        if (definition && definition.prefix) {
+            this.prefix = definition.prefix;
+        }
     }), Property);
 
 /**
@@ -136,6 +140,16 @@ _.assign(VariableScope.prototype, /** @lends VariableScope.prototype */ {
      */
     _postman_propertyRequiresId: true,
 
+    /**
+     * Defines the prefix associated with the VariableList variables for internal use.
+     *
+     * @private
+     * @type {String}
+     *
+     */
+    prefix: '',
+
+
     /**
      * @private
      * @deprecated discontinued in v4.0
@@ -176,7 +190,7 @@ _.assign(VariableScope.prototype, /** @lends VariableScope.prototype */ {
      *                      false otherwise
      */
     has: function (key) {
-        var variable = this.values.oneNormalizedVariable(key),
+        var variable = this.values.oneNormalizedVariable(this.prefix + key),
             i,
             ii;
 
@@ -199,7 +213,7 @@ _.assign(VariableScope.prototype, /** @lends VariableScope.prototype */ {
      * @returns {*} The value of the specified variable across scopes.
      */
     get: function (key) {
-        var variable = this.values.oneNormalizedVariable(key),
+        var variable = this.values.oneNormalizedVariable(this.prefix + key),
             i,
             ii;
 
@@ -222,10 +236,10 @@ _.assign(VariableScope.prototype, /** @lends VariableScope.prototype */ {
      * @param {Variable.types} [type] - Optionally, the value of the variable can be set to a type
      */
     set: function (key, value, type) {
-        var variable = this.values.oneNormalizedVariable(key),
+        var variable = this.values.oneNormalizedVariable(this.prefix + key),
 
             // create an object that will be used as setter
-            update = { key, value };
+            update = { key: this.prefix + key, value: value };
 
         _.isString(type) && (update.type = type);
 
@@ -250,9 +264,9 @@ _.assign(VariableScope.prototype, /** @lends VariableScope.prototype */ {
     unset: function (key) {
         var lastDisabledVariable;
 
-        this.values.remove(function (variable) {
+        this.values.remove((variable) => {
             // bail out if variable name didn't match
-            if (variable.key !== key) {
+            if (variable.key !== (this.prefix + key)) {
                 return false;
             }
 
@@ -269,7 +283,7 @@ _.assign(VariableScope.prototype, /** @lends VariableScope.prototype */ {
 
         // restore the reference with the last disabled variable
         if (lastDisabledVariable) {
-            this.values.reference[key] = lastDisabledVariable;
+            this.values.reference[this.prefix + key] = lastDisabledVariable;
         }
 
         // track the change if mutation tracking is enabled
diff --git a/test/unit/variable-scope.test.js b/test/unit/variable-scope.test.js
index 394f89532..5616b675e 100644
--- a/test/unit/variable-scope.test.js
+++ b/test/unit/variable-scope.test.js
@@ -325,6 +325,17 @@ describe('VariableScope', function () {
                 expect(scope.get('random')).to.be.undefined;
             });
 
+            it('should get variables with prefix', function () {
+                var scope = new VariableScope({
+                    prefix: 'vault:',
+                    values: [
+                        { key: 'vault:var-1', value: 'var-1-value' },
+                        { key: 'vault:var-2', value: 'var-2-value' }
+                    ] });
+
+                expect(scope.get('var-2')).to.equal('var-2-value');
+            });
+
             describe('multi layer search', function () {
                 it('should get from parent scope', function () {
                     var scope = new VariableScope([
@@ -506,6 +517,19 @@ describe('VariableScope', function () {
                 scope.set('var-4', 3.142, 'boolean');
                 expect(scope.get('var-4')).to.be.true;
             });
+
+            it('should correctly update an existing value with prefix', function () {
+                var scope = new VariableScope({
+                    prefix: 'vault:',
+                    values: [{
+                        key: 'vault:var-1',
+                        value: 'var-1-value'
+                    }]
+                });
+
+                scope.set('var-1', 'new-var-1-value');
+                expect(scope.get('var-1')).to.equal('new-var-1-value');
+            });
         });
 
         describe('unset', function () {
@@ -607,6 +631,24 @@ describe('VariableScope', function () {
                 // check reference list
                 expect(scope.values.reference).to.have.property('var-2');
             });
+
+            it('should correctly remove an existing variable with prefix', function () {
+                var scope = new VariableScope({
+                    prefix: 'vault:',
+                    values: [{
+                        key: 'vault:var-1',
+                        value: 'var-1-value'
+                    }, {
+                        key: 'vault:var-2',
+                        value: 'var-2-value'
+                    }]
+                });
+
+                scope.unset('var-1');
+
+                expect(scope.values.count()).to.equal(1);
+                expect(scope.get('var-1')).to.be.undefined;
+            });
         });
 
         describe('clear', function () {
@@ -1233,6 +1275,20 @@ describe('VariableScope', function () {
 
             expect(scope.has('alpha')).to.be.true;
         });
+
+        it('should find variable from current scope with prefix', function () {
+            var scope = new VariableScope({
+                prefix: 'vault:',
+                values: [
+                    { key: 'vault:alpha', value: 'foo' },
+                    { key: 'vault:gamma', value: 'baz', disabled: true }
+                ]
+            });
+
+            expect(scope.has('alpha')).to.be.true;
+            expect(scope.has('gamma')).to.be.false;
+            expect(scope.has('random')).to.be.false;
+        });
     });
 
     describe('disabled variable', function () {
diff --git a/types/index.d.ts b/types/index.d.ts
index 7f799c0da..9d91099f5 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -2327,6 +2327,7 @@ declare module "postman-collection" {
         type definition = {
             id?: string;
             name?: string;
+            prefix?: string;
             values?: Variable.definition[];
         };
     }