diff --git a/jena-arq/src/main/java/org/apache/jena/sparql/expr/nodevalue/XSDFuncOp.java b/jena-arq/src/main/java/org/apache/jena/sparql/expr/nodevalue/XSDFuncOp.java
index dad5316addc..e64e3ed016d 100644
--- a/jena-arq/src/main/java/org/apache/jena/sparql/expr/nodevalue/XSDFuncOp.java
+++ b/jena-arq/src/main/java/org/apache/jena/sparql/expr/nodevalue/XSDFuncOp.java
@@ -1127,10 +1127,21 @@ public static int compareNumeric(NodeValue nv1, NodeValue nv2) {
                 return calcReturn(nv1.getInteger().compareTo(nv2.getInteger()));
             case OP_DECIMAL :
                 return calcReturn(nv1.getDecimal().compareTo(nv2.getDecimal()));
-            case OP_FLOAT :
-                return calcReturn(Float.compare(nv1.getFloat(), nv2.getFloat()));
-            case OP_DOUBLE :
-                return calcReturn(Double.compare(nv1.getDouble(), nv2.getDouble()));
+            case OP_FLOAT : {
+                float x = nv1.getFloat();
+                float y = nv2.getFloat();
+                // Positive and negative zero have the same numeric value.
+                if ( x == y )
+                    return Expr.CMP_EQUAL;
+                return calcReturn(Float.compare(x, y));
+            }
+            case OP_DOUBLE : {
+                double x = nv1.getDouble();
+                double y = nv2.getDouble();
+                if ( x == y )
+                    return Expr.CMP_EQUAL;
+                return calcReturn(Double.compare(x, y));
+            }
             default :
                 throw new ARQInternalErrorException("Unrecognized numeric operation : (" + nv1 + " ," + nv2 + ")");
         }
diff --git a/jena-arq/src/test/java/org/apache/jena/sparql/expr/TestExpressions2.java b/jena-arq/src/test/java/org/apache/jena/sparql/expr/TestExpressions2.java
index 6d637c278d2..d8682f37b59 100644
--- a/jena-arq/src/test/java/org/apache/jena/sparql/expr/TestExpressions2.java
+++ b/jena-arq/src/test/java/org/apache/jena/sparql/expr/TestExpressions2.java
@@ -81,6 +81,23 @@ public static void afterAll() {
 
     @Test public void gregorian_cast_01()       { eval("xsd:gYear('2010-03-22'^^xsd:date) = '2010'^^xsd:gYear", true ); }
 
+    // GH-4297: Signed zero compares equal by value for float, double, and promoted numbers.
+    @Test public void signed_zero_01()          { eval("'0e0'^^xsd:double = '-0e0'^^xsd:double", true); }
+    @Test public void signed_zero_02()          { eval("'-0e0'^^xsd:double != '0e0'^^xsd:double", false); }
+    @Test public void signed_zero_03()          { eval("'-0e0'^^xsd:double < '0e0'^^xsd:double", false); }
+    @Test public void signed_zero_04()          { eval("'0e0'^^xsd:double > '-0e0'^^xsd:double", false); }
+    @Test public void signed_zero_05()          { eval("'-0e0'^^xsd:double <= '0e0'^^xsd:double", true); }
+    @Test public void signed_zero_06()          { eval("'0e0'^^xsd:double >= '-0e0'^^xsd:double", true); }
+    @Test public void signed_zero_07()          { eval("'-0'^^xsd:float = '0'^^xsd:float", true); }
+    @Test public void signed_zero_08()          { eval("'-0'^^xsd:float < '0'^^xsd:float", false); }
+    @Test public void signed_zero_09()          { eval("'-0'^^xsd:float = '0e0'^^xsd:double", true); }
+    @Test public void signed_zero_10()          { eval("'-0'^^xsd:float = 0", true); }
+    @Test public void signed_zero_11()          { eval("'-0e0'^^xsd:double = 0.0", true); }
+    @Test public void signed_zero_12()          { eval("'0e0'^^xsd:double IN ('-0e0'^^xsd:double)", true); }
+    @Test public void signed_zero_13()          { eval("'-1e0'^^xsd:double < '0e0'^^xsd:double", true); }
+    @Test public void signed_zero_14()          { eval("'1e0'^^xsd:double > '-0e0'^^xsd:double", true); }
+    @Test public void signed_zero_15()          { eval("'INF'^^xsd:double > '-0e0'^^xsd:double", true); }
+
     @Test public void coalesce_01()             { assertThrows(ExprEvalException.class, ()-> eval("COALESCE()") ); }
     @Test public void coalesce_02()             { eval("COALESCE(1) = 1", true); }
     @Test public void coalesce_03()             { eval("COALESCE(?x,1) = 1", true); }