diff --git a/cmd/repos.go b/cmd/repos.go
index 3962706..3667995 100644
--- a/cmd/repos.go
+++ b/cmd/repos.go
@@ -27,6 +27,7 @@ var CmdRepos = cli.Command{
 		&repos.CmdReposList,
 		&repos.CmdReposSearch,
 		&repos.CmdRepoCreate,
+		&repos.CmdRepoFork,
 	},
 	Flags: repos.CmdReposListFlags,
 }
diff --git a/cmd/repos/fork.go b/cmd/repos/fork.go
new file mode 100644
index 0000000..1811fce
--- /dev/null
+++ b/cmd/repos/fork.go
@@ -0,0 +1,57 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package repos
+
+import (
+	"fmt"
+
+	"code.gitea.io/tea/cmd/flags"
+	"code.gitea.io/tea/modules/context"
+	"code.gitea.io/tea/modules/print"
+
+	"code.gitea.io/sdk/gitea"
+	"github.com/urfave/cli/v2"
+)
+
+// CmdRepoFork represents a sub command of repos to fork an existing repo
+var CmdRepoFork = cli.Command{
+	Name:        "fork",
+	Aliases:     []string{"f"},
+	Usage:       "Fork an existing repository",
+	Description: "Create a repository from an existing repo",
+	Action:      runRepoFork,
+	Flags: append([]cli.Flag{
+		&cli.StringFlag{
+			Name:    "owner",
+			Aliases: []string{"O"},
+			Usage:   "name of fork's owner, defaults to current user",
+		},
+	}, flags.LoginRepoFlags...),
+}
+
+func runRepoFork(cmd *cli.Context) error {
+	ctx := context.InitCommand(cmd)
+	client := ctx.Login.Client()
+
+	opts := gitea.CreateForkOption{}
+	if ctx.IsSet("owner") {
+		owner := ctx.String("owner")
+		opts.Organization = &owner
+	}
+
+	repo, _, err := client.CreateFork(ctx.Owner, ctx.Repo, opts)
+	if err != nil {
+		return err
+	}
+
+	topics, _, err := client.ListRepoTopics(repo.Owner.UserName, repo.Name, gitea.ListRepoTopicsOptions{})
+	if err != nil {
+		return err
+	}
+	print.RepoDetails(repo, topics)
+
+	fmt.Printf("%s\n", repo.HTMLURL)
+	return nil
+}