diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/signalfx/SignalFxProperties.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/signalfx/SignalFxProperties.java
index e22ac458ab9..8cd16b678bc 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/signalfx/SignalFxProperties.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/signalfx/SignalFxProperties.java
@@ -39,6 +39,12 @@ public class SignalFxProperties extends StepRegistryProperties {
 	 */
 	private String uri;
 
+	/**
+	 * Uniquely identifies the app instance that is publishing metrics to SignalFx.
+	 * Defaults to the local host name.
+	 */
+	private String source;
+
 	public String getAccessToken() {
 		return this.accessToken;
 	}
@@ -55,4 +61,12 @@ public class SignalFxProperties extends StepRegistryProperties {
 		this.uri = uri;
 	}
 
+	public String getSource() {
+		return this.source;
+	}
+
+	public void setSource(String source) {
+		this.source = source;
+	}
+
 }
diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/signalfx/SignalFxPropertiesConfigAdapter.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/signalfx/SignalFxPropertiesConfigAdapter.java
index 3181018440d..721c1a52d8a 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/signalfx/SignalFxPropertiesConfigAdapter.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/signalfx/SignalFxPropertiesConfigAdapter.java
@@ -44,4 +44,9 @@ public class SignalFxPropertiesConfigAdapter
 		return get(SignalFxProperties::getUri, SignalFxConfig.super::uri);
 	}
 
+	@Override
+	public String source() {
+		return get(SignalFxProperties::getSource, SignalFxConfig.super::source);
+	}
+
 }
diff --git a/spring-boot-project/spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc b/spring-boot-project/spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc
index 27e7fee5015..4c7ce88a384 100644
--- a/spring-boot-project/spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc
+++ b/spring-boot-project/spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc
@@ -1380,6 +1380,7 @@ content into your application. Rather, pick only the properties that you need.
 	management.metrics.export.signalfx.enabled= # Whether exporting of metrics to this backend is enabled.
 	management.metrics.export.signalfx.num-threads= # Number of threads to use with the metrics publishing scheduler.
 	management.metrics.export.signalfx.read-timeout= # Read timeout for requests to this backend.
+	management.metrics.export.signalfx.source= # Uniquely identifies the app instance that is publishing metrics to SignalFx. Defaults to the local host name.
 	management.metrics.export.signalfx.step=1m # Step size (i.e. reporting frequency) to use.
 	management.metrics.export.signalfx.uri= # Optional custom URI for the SignalFX API.
 	management.metrics.export.simple.mode=cumulative # Counting mode.