diff --git a/api/serializers.py b/api/serializers.py
index 8fe9328b..a25019df 100644
--- a/api/serializers.py
+++ b/api/serializers.py
@@ -49,7 +49,7 @@ class SleepSerializer(serializers.HyperlinkedModelSerializer):
 class TimerSerializer(serializers.HyperlinkedModelSerializer):
     class Meta:
         model = Timer
-        fields = ('name', 'start', 'end', 'duration', 'active')
+        fields = ('name', 'start', 'end', 'duration', 'active', 'user')
 
 
 class TummyTimeSerializer(serializers.HyperlinkedModelSerializer):
diff --git a/api/views.py b/api/views.py
index dee4c201..129fdc56 100644
--- a/api/views.py
+++ b/api/views.py
@@ -62,7 +62,7 @@ class TimerViewSet(viewsets.ModelViewSet):
     serializer_class = TimerSerializer
 
     def get_queryset(self):
-        params = ['name', 'active']
+        params = ['name', 'active', 'user']
         return filter_by_params(self.request, Timer, params)
 
 
diff --git a/core/admin.py b/core/admin.py
index d0b20b17..e1aa2f59 100644
--- a/core/admin.py
+++ b/core/admin.py
@@ -46,9 +46,9 @@ class SleepAdmin(admin.ModelAdmin):
 
 @admin.register(Timer)
 class TimerAdmin(admin.ModelAdmin):
-    list_display = ('name', 'start', 'end', 'duration', 'active',)
-    list_filter = ('active',)
-    search_fields = ('name',)
+    list_display = ('name', 'start', 'end', 'duration', 'active', 'user')
+    list_filter = ('active', 'user')
+    search_fields = ('name', 'user')
 
 
 @admin.register(TummyTime)
diff --git a/core/migrations/0002_timer_user.py b/core/migrations/0002_timer_user.py
new file mode 100644
index 00000000..2ab2759a
--- /dev/null
+++ b/core/migrations/0002_timer_user.py
@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.4 on 2017-08-17 18:26
+from __future__ import unicode_literals
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('core', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='timer',
+            name='user',
+            field=models.ForeignKey(default=1, on_delete=django.db.models.deletion.CASCADE, related_name='timers', to=settings.AUTH_USER_MODEL),
+            preserve_default=False,
+        ),
+    ]
diff --git a/core/models.py b/core/models.py
index b5a153c7..5c729b99 100644
--- a/core/models.py
+++ b/core/models.py
@@ -115,6 +115,7 @@ class Timer(models.Model):
     start = models.DateTimeField(auto_now=True)
     end = models.DateTimeField(blank=True, null=True, editable=False)
     active = models.BooleanField(default=True, editable=False)
+    user = models.ForeignKey('auth.User', related_name='timers')
 
     objects = models.Manager()
 
diff --git a/core/templatetags/timers.py b/core/templatetags/timers.py
index 6140a623..ecd88c23 100644
--- a/core/templatetags/timers.py
+++ b/core/templatetags/timers.py
@@ -9,9 +9,10 @@ from core.models import Timer
 register = template.Library()
 
 
-@register.inclusion_tag('timer_list.html')
-def list_timers(active=True):
-    timers = Timer.objects.filter(active=active)
+@register.inclusion_tag('timer_list.html', takes_context=True)
+def list_timers(context, active=True):
+    request = context['request'] or None
+    timers = Timer.objects.filter(user=request.user, active=active)
     return {'timers': timers}
 
 
diff --git a/core/views.py b/core/views.py
index 70fd94fd..bba56012 100644
--- a/core/views.py
+++ b/core/views.py
@@ -169,12 +169,10 @@ class TummyTimeAdd(PermissionRequiredMixin, CreateView):
 
 class TummyTimeUpdate(PermissionRequiredMixin, UpdateView):
     model = TummyTime
-    permission_required = ('core.change_tummytime',)
     form_class = TummyTimeForm
     success_url = '/tummy-time'
 
 
 class TummyTimeDelete(PermissionRequiredMixin, DeleteView):
     model = TummyTime
-    permission_required = ('core.delete_tummytime',)
     success_url = '/tummy-time'