diff --git a/src/cmd/cover/html.go b/src/cmd/cover/html.go
index 82ef88b..f76ea03 100644
--- a/src/cmd/cover/html.go
+++ b/src/cmd/cover/html.go
@@ -172,6 +172,27 @@
 	Set   bool
 }
 
+// PackageName returns a name for the package being shown.
+// It does this by choosing the penultimate element of the path
+// name, so foo.bar/baz/foo.go chooses 'baz'. This is cheap
+// and easy, avoids parsing the Go file, and gets a better answer
+// for package main. It returns the empty string if there is
+// a problem.
+func (td templateData) PackageName() string {
+	if len(td.Files) == 0 {
+		return ""
+	}
+	fileName := td.Files[0].Name
+	elems := strings.Split(fileName, "/") // Package path is always slash-separated.
+	// Return the penultimate non-empty element.
+	for i := len(elems) - 2; i >= 0; i-- {
+		if elems[i] != "" {
+			return elems[i]
+		}
+	}
+	return ""
+}
+
 type templateFile struct {
 	Name     string
 	Body     template.HTML
@@ -183,7 +204,7 @@
 <html>
 	<head>
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-		<title>Go Coverage Report</title>
+		<title>{{$pkg := .PackageName}}{{if $pkg}}{{$pkg}}: {{end}}Go Coverage Report</title>
 		<style>
 			body {
 				background: black;
diff --git a/src/cmd/cover/pkgname_test.go b/src/cmd/cover/pkgname_test.go
new file mode 100644
index 0000000..1c731ad
--- /dev/null
+++ b/src/cmd/cover/pkgname_test.go
@@ -0,0 +1,31 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import "testing"
+
+func TestPackageName(t *testing.T) {
+	var tests = []struct {
+		fileName, pkgName string
+	}{
+		{"", ""},
+		{"///", ""},
+		{"fmt", ""}, // No Go file, improper form.
+		{"fmt/foo.go", "fmt"},
+		{"encoding/binary/foo.go", "binary"},
+		{"encoding/binary/////foo.go", "binary"},
+	}
+	var tf templateFile
+	for _, test := range tests {
+		tf.Name = test.fileName
+		td := templateData{
+			Files: []*templateFile{&tf},
+		}
+		got := td.PackageName()
+		if got != test.pkgName {
+			t.Errorf("%s: got %s want %s", test.fileName, got, test.pkgName)
+		}
+	}
+}