diff --git a/commands/comment.go b/commands/comment.go
index d8995c3ed..3ad0fa363 100644
--- a/commands/comment.go
+++ b/commands/comment.go
@@ -19,6 +19,7 @@ func newCommentCommand() *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return runComment(env, args)
 		},
+		ValidArgsFunction: completeBugs(env),
 	}
 
 	cmd.AddCommand(newCommentAddCommand())
diff --git a/commands/helper_completion.go b/commands/helper_completion.go
new file mode 100644
index 000000000..4d5883af6
--- /dev/null
+++ b/commands/helper_completion.go
@@ -0,0 +1,54 @@
+package commands
+
+import (
+	"log"
+
+	"github.com/spf13/cobra"
+
+	"github.com/MichaelMure/git-bug/cache"
+	"github.com/MichaelMure/git-bug/query"
+)
+
+type validArgsFunction func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective)
+
+func completeBugs(env *Env) validArgsFunction {
+	return func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		// Currently, the commands accept at most one bug ID.
+		if len(args) != 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+
+		if err := loadBackend(env)(cmd, args); err != nil {
+			log.Println(err)
+			return nil, cobra.ShellCompDirectiveError
+		}
+		defer func() {
+			err := closeBackend(env)(cmd, args)
+			if err != nil {
+				log.Println(err)
+			}
+		}()
+
+		q := query.NewQuery()
+		allIds, err := env.backend.QueryBugs(q)
+		if err != nil {
+			log.Println(err)
+			return nil, cobra.ShellCompDirectiveError
+		}
+
+		bugExcerpt := make([]*cache.BugExcerpt, len(allIds))
+		for i, id := range allIds {
+			bugExcerpt[i], err = env.backend.ResolveBugExcerpt(id)
+			if err != nil {
+				log.Println(err)
+				return nil, cobra.ShellCompDirectiveError
+			}
+		}
+
+		completions := make([]string, len(allIds))
+		for i, id := range allIds {
+			completions[i] = id.Human() + "\t" + bugExcerpt[i].Title
+		}
+		return completions, cobra.ShellCompDirectiveDefault
+	}
+}
diff --git a/commands/label.go b/commands/label.go
index e3ffdb644..391a8b404 100644
--- a/commands/label.go
+++ b/commands/label.go
@@ -17,6 +17,7 @@ func newLabelCommand() *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return runLabel(env, args)
 		},
+		ValidArgsFunction: completeBugs(env),
 	}
 
 	cmd.AddCommand(newLabelAddCommand())
diff --git a/commands/rm.go b/commands/rm.go
index 3ad4548de..dcb6fffa8 100644
--- a/commands/rm.go
+++ b/commands/rm.go
@@ -18,6 +18,7 @@ func newRmCommand() *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return runRm(env, args)
 		},
+		ValidArgsFunction: completeBugs(env),
 	}
 
 	flags := cmd.Flags()
diff --git a/commands/select.go b/commands/select.go
index 64e38d9bd..0de875b6a 100644
--- a/commands/select.go
+++ b/commands/select.go
@@ -32,6 +32,7 @@ The complementary command is "git bug deselect" performing the opposite operatio
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return runSelect(env, args)
 		},
+		ValidArgsFunction: completeBugs(env),
 	}
 
 	return cmd
diff --git a/commands/show.go b/commands/show.go
index 9ebd1926d..6bc0d31b6 100644
--- a/commands/show.go
+++ b/commands/show.go
@@ -30,6 +30,7 @@ func newShowCommand() *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return runShow(env, options, args)
 		},
+		ValidArgsFunction: completeBugs(env),
 	}
 
 	flags := cmd.Flags()
diff --git a/commands/status.go b/commands/status.go
index 4dceb51c3..0e0f54d06 100644
--- a/commands/status.go
+++ b/commands/status.go
@@ -16,6 +16,7 @@ func newStatusCommand() *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return runStatus(env, args)
 		},
+		ValidArgsFunction: completeBugs(env),
 	}
 
 	cmd.AddCommand(newStatusCloseCommand())
diff --git a/commands/title.go b/commands/title.go
index 7afa07ce7..60e297697 100644
--- a/commands/title.go
+++ b/commands/title.go
@@ -16,6 +16,7 @@ func newTitleCommand() *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return runTitle(env, args)
 		},
+		ValidArgsFunction: completeBugs(env),
 	}
 
 	cmd.AddCommand(newTitleEditCommand())
diff --git a/misc/bash_completion/git-bug b/misc/bash_completion/git-bug
index 912e87b48..68c8414bb 100644
--- a/misc/bash_completion/git-bug
+++ b/misc/bash_completion/git-bug
@@ -740,6 +740,7 @@ _git-bug_comment()
 
     must_have_one_flag=()
     must_have_one_noun=()
+    has_completion_function=1
     noun_aliases=()
 }
 
@@ -822,6 +823,7 @@ _git-bug_label()
 
     must_have_one_flag=()
     must_have_one_noun=()
+    has_completion_function=1
     noun_aliases=()
 }
 
@@ -1002,6 +1004,7 @@ _git-bug_rm()
 
     must_have_one_flag=()
     must_have_one_noun=()
+    has_completion_function=1
     noun_aliases=()
 }
 
@@ -1022,6 +1025,7 @@ _git-bug_select()
 
     must_have_one_flag=()
     must_have_one_noun=()
+    has_completion_function=1
     noun_aliases=()
 }
 
@@ -1052,6 +1056,7 @@ _git-bug_show()
 
     must_have_one_flag=()
     must_have_one_noun=()
+    has_completion_function=1
     noun_aliases=()
 }
 
@@ -1114,6 +1119,7 @@ _git-bug_status()
 
     must_have_one_flag=()
     must_have_one_noun=()
+    has_completion_function=1
     noun_aliases=()
 }
 
@@ -1181,6 +1187,7 @@ _git-bug_title()
 
     must_have_one_flag=()
     must_have_one_noun=()
+    has_completion_function=1
     noun_aliases=()
 }