diff --git a/.github/workflows/s3tests.yml b/.github/workflows/s3tests.yml
index 980b921ff..b40f8d3ea 100644
--- a/.github/workflows/s3tests.yml
+++ b/.github/workflows/s3tests.yml
@@ -289,6 +289,7 @@ jobs:
           s3tests/functional/test_s3.py::test_object_write_check_etag \
           s3tests/functional/test_s3.py::test_object_write_cache_control \
           s3tests/functional/test_s3.py::test_object_write_expires \
+          s3tests/functional/test_s3.py::test_object_content_encoding_aws_chunked \
           s3tests/functional/test_s3.py::test_object_write_read_update_read_delete \
           s3tests/functional/test_s3.py::test_object_metadata_replaced_on_put \
           s3tests/functional/test_s3.py::test_object_write_file \
@@ -1149,6 +1150,7 @@ jobs:
           s3tests/functional/test_s3.py::test_object_write_check_etag \
           s3tests/functional/test_s3.py::test_object_write_cache_control \
           s3tests/functional/test_s3.py::test_object_write_expires \
+          s3tests/functional/test_s3.py::test_object_content_encoding_aws_chunked \
           s3tests/functional/test_s3.py::test_object_write_read_update_read_delete \
           s3tests/functional/test_s3.py::test_object_metadata_replaced_on_put \
           s3tests/functional/test_s3.py::test_object_write_file \
diff --git a/weed/s3api/s3_content_encoding_test.go b/weed/s3api/s3_content_encoding_test.go
index a50a8bb3c..0b8f5cd9c 100644
--- a/weed/s3api/s3_content_encoding_test.go
+++ b/weed/s3api/s3_content_encoding_test.go
@@ -2,6 +2,7 @@ package s3api
 
 import (
 	"bytes"
+	"net/http"
 	"net/http/httptest"
 	"testing"
 
@@ -202,3 +203,57 @@ func TestContentEncodingWithOtherHeaders(t *testing.T) {
 	assert.Equal(t, "max-age=3600", getResp.Header().Get("Cache-Control"))
 	assert.Equal(t, "attachment; filename=test.txt", getResp.Header().Get("Content-Disposition"))
 }
+
+// TestContentEncodingDropsAwsChunked verifies that aws-chunked, the SigV4
+// streaming framing of the request body, is not stored with the object, also
+// when the encodings come in separate Content-Encoding fields
+func TestContentEncodingDropsAwsChunked(t *testing.T) {
+	testCases := []struct {
+		name   string
+		fields []string
+		stored string
+	}{
+		{"last", []string{"gzip, aws-chunked"}, "gzip"},
+		{"first", []string{"aws-chunked, gzip"}, "gzip"},
+		{"no spaces", []string{"aws-chunked,gzip,br"}, "gzip, br"},
+		{"alone", []string{"aws-chunked"}, ""},
+		{"capitals", []string{"AWS-Chunked"}, ""},
+		{"twice", []string{"aws-chunked, aws-chunked"}, ""},
+		{"separate fields", []string{"aws-chunked", "gzip"}, "gzip"},
+		{"separate fields, alone", []string{"aws-chunked", "aws-chunked"}, ""},
+		{"without aws-chunked", []string{"deflate, gzip"}, "deflate, gzip"},
+		{"without aws-chunked, separate fields", []string{"deflate", "gzip"}, "deflate, gzip"},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			assert.Equal(t, tc.stored, storedContentEncoding(tc.fields))
+
+			// CreateMultipartUpload
+			putReq := httptest.NewRequest("PUT", "/test-bucket/test-object.txt", bytes.NewBufferString("body"))
+			for _, field := range tc.fields {
+				putReq.Header.Add("Content-Encoding", field)
+			}
+			metadata, errCode := ParseS3Metadata(putReq, nil, false)
+			require.Equal(t, 0, int(errCode))
+			if tc.stored == "" {
+				assert.NotContains(t, metadata, "Content-Encoding")
+			} else {
+				assert.Equal(t, []byte(tc.stored), metadata["Content-Encoding"])
+			}
+
+			// CopyObject with the REPLACE metadata directive
+			copyReq := http.Header{}
+			for _, field := range tc.fields {
+				copyReq.Add("Content-Encoding", field)
+			}
+			metadata, err := processMetadataBytes(copyReq, map[string][]byte{"Content-Encoding": []byte("br")}, true, false)
+			require.NoError(t, err)
+			if tc.stored == "" {
+				assert.NotContains(t, metadata, "Content-Encoding")
+			} else {
+				assert.Equal(t, []byte(tc.stored), metadata["Content-Encoding"])
+			}
+		})
+	}
+}
diff --git a/weed/s3api/s3_metadata_util.go b/weed/s3api/s3_metadata_util.go
index 71ef623f9..6f71776f1 100644
--- a/weed/s3api/s3_metadata_util.go
+++ b/weed/s3api/s3_metadata_util.go
@@ -30,7 +30,7 @@ func ParseS3Metadata(r *http.Request, existing map[string][]byte, isReplace bool
 	}
 
 	// Content-Encoding (standard HTTP header used by S3)
-	if ce := r.Header.Get("Content-Encoding"); ce != "" {
+	if ce := storedContentEncoding(r.Header.Values("Content-Encoding")); ce != "" {
 		metadata["Content-Encoding"] = []byte(ce)
 	}
 
@@ -108,3 +108,28 @@ func ParseS3Metadata(r *http.Request, existing map[string][]byte, isReplace bool
 
 	return metadata, s3err.ErrNone
 }
+
+// storedContentEncoding returns the Content-Encoding to keep with an object,
+// from the values of the request's Content-Encoding fields, which it combines
+// as one list. aws-chunked names the SigV4 streaming framing of the request
+// body, which is decoded on upload, so S3 does not store it: "gzip,
+// aws-chunked" is kept as "gzip", and "aws-chunked" alone as no
+// Content-Encoding at all.
+func storedContentEncoding(values []string) string {
+	value := strings.Join(values, ", ")
+	var kept []string
+	chunked := false
+	for _, encoding := range strings.Split(value, ",") {
+		encoding = strings.TrimSpace(encoding)
+		switch {
+		case strings.EqualFold(encoding, "aws-chunked"):
+			chunked = true
+		case encoding != "":
+			kept = append(kept, encoding)
+		}
+	}
+	if !chunked {
+		return value
+	}
+	return strings.Join(kept, ", ")
+}
diff --git a/weed/s3api/s3api_object_handlers_copy.go b/weed/s3api/s3api_object_handlers_copy.go
index 222b8c6a4..6f6cbf3ec 100644
--- a/weed/s3api/s3api_object_handlers_copy.go
+++ b/weed/s3api/s3api_object_handlers_copy.go
@@ -1197,7 +1197,11 @@ func processMetadataBytes(reqHeader http.Header, existing map[string][]byte, rep
 			}
 		}
 		for _, h := range copyReplaceSystemHeaders {
-			if v := reqHeader.Get(h); v != "" {
+			v := reqHeader.Get(h)
+			if h == "Content-Encoding" {
+				v = storedContentEncoding(reqHeader.Values(h))
+			}
+			if v != "" {
 				metadata[h] = []byte(v)
 			}
 		}
diff --git a/weed/s3api/s3api_object_handlers_put.go b/weed/s3api/s3api_object_handlers_put.go
index 53f7fe027..eeea0a736 100644
--- a/weed/s3api/s3api_object_handlers_put.go
+++ b/weed/s3api/s3api_object_handlers_put.go
@@ -833,8 +833,12 @@ func (s3a *S3ApiServer) putToFiler(r *http.Request, filePath string, dataReader
 				entry.Extended[k] = []byte(v[0])
 			} else {
 				switch k {
-				case "Cache-Control", "Expires", "Content-Disposition", "Content-Encoding", "Content-Language":
+				case "Cache-Control", "Expires", "Content-Disposition", "Content-Language":
 					entry.Extended[k] = []byte(v[0])
+				case "Content-Encoding":
+					if ce := storedContentEncoding(v); ce != "" {
+						entry.Extended[k] = []byte(ce)
+					}
 				}
 			}
 			if k == "Response-Content-Disposition" {