diff --git a/scripts/pylib/twister/twisterlib.py b/scripts/pylib/twister/twisterlib.py
index 96c01ac61e9..e17f88ae2e9 100755
--- a/scripts/pylib/twister/twisterlib.py
+++ b/scripts/pylib/twister/twisterlib.py
@@ -7,6 +7,7 @@ import os
 import contextlib
 import string
 import mmap
+import math
 import sys
 import re
 import subprocess
@@ -423,7 +424,7 @@ class Handler:
 
         self.name = instance.name
         self.instance = instance
-        self.timeout = instance.testcase.timeout
+        self.timeout = math.ceil(instance.testcase.timeout * instance.platform.timeout_multiplier)
         self.sourcedir = instance.testcase.source_dir
         self.build_dir = instance.build_dir
         self.log = os.path.join(self.build_dir, "handler.log")
@@ -1626,6 +1627,7 @@ class Platform:
         # if no RAM size is specified by the board, take a default of 128K
         self.ram = 128
 
+        self.timeout_multiplier = 1.0
         self.ignore_tags = []
         self.only_tags = []
         self.default = False
@@ -1651,6 +1653,7 @@ class Platform:
         # if no RAM size is specified by the board, take a default of 128K
         self.ram = data.get("ram", 128)
         testing = data.get("testing", {})
+        self.timeout_multiplier = testing.get("timeout_multiplier", 1.0)
         self.ignore_tags = testing.get("ignore_tags", [])
         self.only_tags = testing.get("only_tags", [])
         self.default = testing.get("default", False)
diff --git a/scripts/schemas/twister/platform-schema.yaml b/scripts/schemas/twister/platform-schema.yaml
index 2deaa8be1d2..02c68271b2b 100644
--- a/scripts/schemas/twister/platform-schema.yaml
+++ b/scripts/schemas/twister/platform-schema.yaml
@@ -48,6 +48,9 @@ mapping:
   "testing":
     type: map
     mapping:
+      "timeout_multiplier":
+        type: number
+        required: false
       "default":
         type: bool
       "only_tags":