diff --git a/app/event/filters.py b/app/event/filters.py
new file mode 100644
index 0000000..7a07209
--- /dev/null
+++ b/app/event/filters.py
@@ -0,0 +1,26 @@
+from django.db.models import Q
+from django_filters import rest_framework as filters
+from django_filters.constants import EMPTY_VALUES
+from event.models import Event
+
+
+class EventFilterMixin(filters.FilterSet):
+    event = filters.CharFilter(method="filter_by_event_name")
+    event_field_prefix = "event"
+
+    def filter_by_event_name(self, queryset, name, value):
+        if value in EMPTY_VALUES:
+            return queryset
+
+        prefix = self.event_field_prefix
+        return queryset.filter(Q(**{f"{prefix}__name_ko": value}) | Q(**{f"{prefix}__name_en": value}))
+
+    def filter_queryset(self, queryset):
+        queryset = super().filter_queryset(queryset)
+
+        if self.data.get("event") in EMPTY_VALUES:
+            latest = Event.objects.filter_active().first()
+            if latest:
+                queryset = queryset.filter(**{self.event_field_prefix: latest})
+
+        return queryset
diff --git a/app/event/presentation/filters.py b/app/event/presentation/filters.py
new file mode 100644
index 0000000..ff4c3ce
--- /dev/null
+++ b/app/event/presentation/filters.py
@@ -0,0 +1,16 @@
+from core.models import BaseAbstractModelQuerySet
+from django.db.models import Q
+from django_filters import rest_framework as filters
+from django_filters.constants import EMPTY_VALUES
+from event.filters import EventFilterMixin
+
+
+class PresentationFilterSet(EventFilterMixin):
+    event_field_prefix = "type__event"
+    types = filters.BaseCSVFilter(method="filter_by_type_names")
+
+    def filter_by_type_names(self, queryset: BaseAbstractModelQuerySet, name: str, values: list[str]) -> Q:
+        if values in EMPTY_VALUES:
+            return queryset
+
+        return queryset.filter(Q(type__name_ko__in=values) | Q(type__name_en__in=values))
diff --git a/app/event/presentation/test/api_test.py b/app/event/presentation/test/api_test.py
index d397467..d88793e 100644
--- a/app/event/presentation/test/api_test.py
+++ b/app/event/presentation/test/api_test.py
@@ -1,5 +1,6 @@
 import http
 import urllib.parse
+from datetime import datetime
 
 import pytest
 from django.urls import reverse
@@ -22,18 +23,20 @@ def test_presentation_api(api_client: APIClient, create_presentation_set: Presen
 def test_presentation_event_type_filter_api(api_client: APIClient):
     # Given: 행사 2개에 각각 2 종류의 발표 유형이 있고, 각 발표 유형마다 1개의 발표가 있음.
     organization = Organization.objects.create(name="Test Organization")
-    event_1: Event = Event.objects.create(organization=organization, name="Test Event 1")
-    event_2: Event = Event.objects.create(organization=organization, name="Test Event 2")
+    event_1: Event = Event.objects.create(
+        organization=organization, name="Test Event 1", event_start_at=datetime(2025, 8, 1)
+    )
+    event_2: Event = Event.objects.create(
+        organization=organization, name="Test Event 2", event_start_at=datetime(2026, 8, 1)
+    )
 
     event_1_prst_type_1 = PresentationType.objects.create(event=event_1, name="Type 1")
     event_1_prst_type_2 = PresentationType.objects.create(event=event_1, name="Type 2")
-    event_2_prst_type_1 = PresentationType.objects.create(event=event_2, name="Type 1")
-    event_2_prst_type_2 = PresentationType.objects.create(event=event_2, name="Type 2")
+    PresentationType.objects.create(event=event_2, name="Type 1")
+    PresentationType.objects.create(event=event_2, name="Type 2")
 
     event_1_prst_type_1_prst = Presentation.objects.create(type=event_1_prst_type_1, title="Presentation 1")
     event_1_prst_type_2_prst = Presentation.objects.create(type=event_1_prst_type_2, title="Presentation 2")
-    event_2_prst_type_1_prst = Presentation.objects.create(type=event_2_prst_type_1, title="Presentation 3")
-    Presentation.objects.create(type=event_2_prst_type_2, title="Presentation 4")
 
     # When: API 요청을 통해 행사 1의 발표 유형 1과 2에 해당하는 발표를 요청할 시
     qs = urllib.parse.urlencode(
@@ -51,16 +54,29 @@ def test_presentation_event_type_filter_api(api_client: APIClient):
         str(event_1_prst_type_2_prst.id),
     }
 
-    # When: API 요청을 통해 행사 유형은 지정하지 않고 유형 1에 해당하는 발표를 요청할 시
-    qs = urllib.parse.urlencode({"types": event_1_prst_type_1.name})
-    response = api_client.get(f"{reverse('v1:presentation-list')}?{qs}")
 
-    # Then: 행사 1의 발표 유형 1과 행사 2의 발표 유형 1에 해당하는 발표가 반환되어야 함.
-    assert response.status_code == http.HTTPStatus.OK
+@pytest.mark.django_db
+def test_presentation_defaults_to_latest_event(api_client: APIClient):
+    # Given: 2개의 행사가 있고, 각각 발표가 있음.
+    organization = Organization.objects.create(name="Test Organization")
+    old_event = Event.objects.create(
+        organization=organization, name="PyCon Korea 2025", event_start_at=datetime(2025, 8, 1)
+    )
+    new_event = Event.objects.create(
+        organization=organization, name="PyCon Korea 2026", event_start_at=datetime(2026, 8, 1)
+    )
 
+    old_type = PresentationType.objects.create(event=old_event, name="Talk")
+    new_type = PresentationType.objects.create(event=new_event, name="Talk")
+
+    Presentation.objects.create(type=old_type, title="Old Presentation")
+    new_prst = Presentation.objects.create(type=new_type, title="New Presentation")
+
+    # When: event 파라미터 없이 요청
+    response = api_client.get(reverse("v1:presentation-list"))
+
+    # Then: 최신 행사(2026)의 발표만 반환
+    assert response.status_code == http.HTTPStatus.OK
     response_data = response.json()
-    assert len(response_data) == 2, "Should return presentations for type 1 across all events"
-    assert {datum["id"] for datum in response_data} == {
-        str(event_1_prst_type_1_prst.id),
-        str(event_2_prst_type_1_prst.id),
-    }
+    assert len(response_data) == 1
+    assert response_data[0]["id"] == str(new_prst.id)
diff --git a/app/event/presentation/views.py b/app/event/presentation/views.py
index a0e5d32..c5b01ad 100644
--- a/app/event/presentation/views.py
+++ b/app/event/presentation/views.py
@@ -1,32 +1,12 @@
 from core.const.tag import OpenAPITag
-from core.models import BaseAbstractModelQuerySet
-from django.db.models import Q
 from django.utils.decorators import method_decorator
-from django_filters import rest_framework as filters
-from django_filters.constants import EMPTY_VALUES
 from drf_spectacular.utils import extend_schema
+from event.presentation.filters import PresentationFilterSet
 from event.presentation.models import Presentation, PresentationCategory
 from event.presentation.serializers import PresentationSerializer
 from rest_framework import mixins, viewsets
 
 
-class PresentationFilterSet(filters.FilterSet):
-    event = filters.CharFilter(method="filter_by_event_name")
-    types = filters.BaseCSVFilter(method="filter_by_type_names")
-
-    def filter_by_event_name(self, queryset: BaseAbstractModelQuerySet, name: str, value: str) -> Q:
-        if value in EMPTY_VALUES:
-            return queryset
-
-        return queryset.filter(Q(type__event__name_ko=value) | Q(type__event__name_en=value))
-
-    def filter_by_type_names(self, queryset: BaseAbstractModelQuerySet, name: str, values: list[str]) -> Q:
-        if values in EMPTY_VALUES:
-            return queryset
-
-        return queryset.filter(Q(type__name_ko__in=values) | Q(type__name_en__in=values))
-
-
 @method_decorator(name="list", decorator=extend_schema(tags=[OpenAPITag.EVENT_PRESENTATION]))
 class PresentationCategoryViewSet(mixins.ListModelMixin, viewsets.GenericViewSet):
     queryset = PresentationCategory.objects.filter_active()
diff --git a/app/event/sponsor/filters.py b/app/event/sponsor/filters.py
new file mode 100644
index 0000000..efb276b
--- /dev/null
+++ b/app/event/sponsor/filters.py
@@ -0,0 +1,5 @@
+from event.filters import EventFilterMixin
+
+
+class SponsorTierFilterSet(EventFilterMixin):
+    event_field_prefix = "event"
diff --git a/app/event/sponsor/test/__init__.py b/app/event/sponsor/test/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/event/sponsor/test/api_test.py b/app/event/sponsor/test/api_test.py
new file mode 100644
index 0000000..1baf037
--- /dev/null
+++ b/app/event/sponsor/test/api_test.py
@@ -0,0 +1,90 @@
+import http
+from datetime import datetime
+
+import pytest
+from django.urls import reverse
+from event.models import Event
+from event.sponsor.models import Sponsor, SponsorTier, SponsorTierSponsorRelation
+from file.models import PublicFile
+from rest_framework.test import APIClient
+from user.models.organization import Organization
+
+
+@pytest.fixture
+def api_client():
+    return APIClient()
+
+
+@pytest.fixture
+def two_events():
+    organization = Organization.objects.create(name="Test Organization")
+    old_event = Event.objects.create(
+        organization=organization, name="PyCon Korea 2025", event_start_at=datetime(2025, 8, 1)
+    )
+    new_event = Event.objects.create(
+        organization=organization, name="PyCon Korea 2026", event_start_at=datetime(2026, 8, 1)
+    )
+    return old_event, new_event
+
+
+def _make_sponsor(event, name, tier):
+    logo = PublicFile.objects.create(
+        file=f"public/{name}.png",
+        mimetype="image/png",
+        hash=name,
+        size=0,
+    )
+    sponsor = Sponsor.objects.create(event=event, name=name, logo=logo)
+    SponsorTierSponsorRelation.objects.create(tier=tier, sponsor=sponsor)
+    return sponsor
+
+
+@pytest.mark.django_db
+def test_sponsor_defaults_to_latest_event(api_client: APIClient, two_events):
+    old_event, new_event = two_events
+
+    # Given: 각 행사에 후원 등급과 후원사가 있음
+    old_tier = SponsorTier.objects.create(event=old_event, name="Gold", order=0)
+    new_tier = SponsorTier.objects.create(event=new_event, name="Gold", order=0)
+
+    _make_sponsor(old_event, "Old Sponsor", old_tier)
+    _make_sponsor(new_event, "New Sponsor", new_tier)
+
+    # When: event 파라미터 없이 요청
+    response = api_client.get(reverse("v1:sponsor-list"))
+
+    # Then: 최신 행사(2026)의 후원 등급만 반환
+    assert response.status_code == http.HTTPStatus.OK
+    response_data = response.json()
+    assert len(response_data) == 1
+    assert response_data[0]["id"] == str(new_tier.id)
+
+
+@pytest.mark.django_db
+def test_sponsor_filter_by_event_name(api_client: APIClient, two_events):
+    old_event, new_event = two_events
+
+    old_tier = SponsorTier.objects.create(event=old_event, name="Gold", order=0)
+    new_tier = SponsorTier.objects.create(event=new_event, name="Gold", order=0)
+
+    _make_sponsor(old_event, "Old Sponsor", old_tier)
+    _make_sponsor(new_event, "New Sponsor", new_tier)
+
+    # When: 2025 행사를 명시적으로 지정
+    response = api_client.get(reverse("v1:sponsor-list"), {"event": "PyCon Korea 2025"})
+
+    # Then: 2025 행사의 후원 등급만 반환
+    assert response.status_code == http.HTTPStatus.OK
+    response_data = response.json()
+    assert len(response_data) == 1
+    assert response_data[0]["id"] == str(old_tier.id)
+
+
+@pytest.mark.django_db
+def test_sponsor_no_events_returns_empty(api_client: APIClient):
+    # When: 이벤트가 없을 때 요청
+    response = api_client.get(reverse("v1:sponsor-list"))
+
+    # Then: 빈 응답
+    assert response.status_code == http.HTTPStatus.OK
+    assert response.json() == []
diff --git a/app/event/sponsor/views.py b/app/event/sponsor/views.py
index 25d22aa..7bd3b1e 100644
--- a/app/event/sponsor/views.py
+++ b/app/event/sponsor/views.py
@@ -2,6 +2,7 @@
 from django.db import models
 from django.utils.decorators import method_decorator
 from drf_spectacular.utils import extend_schema
+from event.sponsor.filters import SponsorTierFilterSet
 from event.sponsor.models import Sponsor, SponsorTier
 from event.sponsor.serializers import SponsorTierSerializer
 from rest_framework import mixins, viewsets
@@ -17,3 +18,4 @@ class SponsorTierViewSet(mixins.ListModelMixin, viewsets.GenericViewSet):
         )
     )
     serializer_class = SponsorTierSerializer
+    filterset_class = SponsorTierFilterSet