diff --git a/docs/METRICS.md b/docs/METRICS.md
index 6ab7cb5..ae750fb 100644
--- a/docs/METRICS.md
+++ b/docs/METRICS.md
@@ -10,6 +10,7 @@ The number of measurements that have either been sent to an Atlas backend or dro
 
 * `id`: One of `sent` or `dropped`.
 * `error`: The type of error that occurred, one of `http-error`, `validation`, or `other`.
+* `owner`: `spectatord`
 * Common Infrastructure
 
 ### spectator.registrySize
@@ -20,6 +21,7 @@ The number of measurements stored in the registry.
 
 **Dimensions:**
 
+* `owner`: `spectatord`
 * Common Infrastructure
 
 ### spectatord.parsedCount
diff --git a/spectator/publisher.h b/spectator/publisher.h
index 9782412..3fffd8f 100644
--- a/spectator/publisher.h
+++ b/spectator/publisher.h
@@ -27,6 +27,7 @@ namespace detail {
 template <typename R>
 auto get_counter(R* registry, Tags tags) -> std::shared_ptr<Counter> {
   static constexpr auto kSpectatorMeasurements = "spectator.measurements";
+  tags.add("owner", "spectatord");
   return registry->GetCounter(kSpectatorMeasurements, std::move(tags));
 }
 }  // namespace detail
diff --git a/spectator/registry.cc b/spectator/registry.cc
index 8000120..3a927cd 100644
--- a/spectator/registry.cc
+++ b/spectator/registry.cc
@@ -13,7 +13,7 @@ Registry::Registry(std::unique_ptr<Config> config,
       meter_ttl_{absl::ToInt64Nanoseconds(config->meter_ttl)},
       config_{std::move(config)},
       logger_{std::move(logger)},
-      registry_size_{GetDistributionSummary("spectator.registrySize")},
+      registry_size_{GetDistributionSummary("spectator.registrySize", Tags{{"owner", "spectatord"}})},
       publisher_(this) {
   if (meter_ttl_ == 0) {
     meter_ttl_ = int64_t(15) * 60 * 1000 * 1000 * 1000;
diff --git a/spectator/registry_test.cc b/spectator/registry_test.cc
index 91b446c..537340a 100644
--- a/spectator/registry_test.cc
+++ b/spectator/registry_test.cc
@@ -184,7 +184,7 @@ TEST(Registry, DistSummary_Size) {
   r.GetCounter("bar")->Increment();
   // we have 4 measurements from the timer + 1 from the counter
   r.Measurements();
-  EXPECT_DOUBLE_EQ(r.GetDistributionSummary("spectator.registrySize")->TotalAmount(), 5.0);
+  EXPECT_DOUBLE_EQ(r.GetDistributionSummary("spectator.registrySize", Tags{{"owner", "spectatord"}})->TotalAmount(), 5.0);
 }
 
 TEST(Registry, DeleteMeters) {