diff --git a/java/src/org/broadinstitute/sting/gatk/filters/SampleFilter.java b/java/src/org/broadinstitute/sting/gatk/filters/SampleFilter.java
new file mode 100755
index 000000000..ee6a56f28
--- /dev/null
+++ b/java/src/org/broadinstitute/sting/gatk/filters/SampleFilter.java
@@ -0,0 +1,16 @@
+package org.broadinstitute.sting.gatk.filters;
+
+import net.sf.picard.filter.SamRecordFilter;
+import net.sf.samtools.SAMRecord;
+import net.sf.samtools.SAMReadGroupRecord;
+import org.broadinstitute.sting.utils.cmdLine.Argument;
+
+public class SampleFilter implements SamRecordFilter {
+    @Argument(fullName = "sample_to_keep", shortName = "goodSM", doc="The name of the sample to keep, filtering out all others", required=true)
+    private String SAMPLE_TO_KEEP = null;
+
+    public boolean filterOut( final SAMRecord read ) {
+        final SAMReadGroupRecord readGroup = read.getReadGroup();
+        return !( readGroup != null && readGroup.getSample().equals( SAMPLE_TO_KEEP ) );
+    }
+}