diff --git a/backend/db/member.go b/backend/db/member.go
index 56b586e..04345b9 100644
--- a/backend/db/member.go
+++ b/backend/db/member.go
@@ -13,12 +13,13 @@ import (
 const MaxMemberCount = 500
 
 type Member struct {
-	ID         xid.ID
-	UserID     xid.ID
-	Name       string
-	Bio        *string
-	AvatarURLs []string `db:"avatar_urls"`
-	Links      []string
+	ID          xid.ID
+	UserID      xid.ID
+	Name        string
+	DisplayName *string
+	Bio         *string
+	AvatarURLs  []string `db:"avatar_urls"`
+	Links       []string
 }
 
 const (
@@ -79,10 +80,10 @@ func (db *DB) UserMembers(ctx context.Context, userID xid.ID) (ms []Member, err
 }
 
 // CreateMember creates a member.
-func (db *DB) CreateMember(ctx context.Context, tx pgx.Tx, userID xid.ID, name, bio string, links []string) (m Member, err error) {
+func (db *DB) CreateMember(ctx context.Context, tx pgx.Tx, userID xid.ID, name string, displayName *string, bio string, links []string) (m Member, err error) {
 	sql, args, err := sq.Insert("members").
-		Columns("user_id", "id", "name", "bio", "links").
-		Values(userID, xid.New(), name, bio, links).
+		Columns("user_id", "id", "name", "display_name", "bio", "links").
+		Values(userID, xid.New(), name, displayName, bio, links).
 		Suffix("RETURNING *").ToSql()
 	if err != nil {
 		return m, errors.Wrap(err, "building sql")
diff --git a/backend/routes/member/create_member.go b/backend/routes/member/create_member.go
index ad145ca..840ec12 100644
--- a/backend/routes/member/create_member.go
+++ b/backend/routes/member/create_member.go
@@ -12,13 +12,14 @@ import (
 )
 
 type CreateMemberRequest struct {
-	Name     string       `json:"name"`
-	Bio      string       `json:"bio"`
-	Avatar   string       `json:"avatar"`
-	Links    []string     `json:"links"`
-	Names    []db.Name    `json:"names"`
-	Pronouns []db.Pronoun `json:"pronouns"`
-	Fields   []db.Field   `json:"fields"`
+	Name        string       `json:"name"`
+	DisplayName *string      `json:"display_name"`
+	Bio         string       `json:"bio"`
+	Avatar      string       `json:"avatar"`
+	Links       []string     `json:"links"`
+	Names       []db.Name    `json:"names"`
+	Pronouns    []db.Pronoun `json:"pronouns"`
+	Fields      []db.Field   `json:"fields"`
 }
 
 func (s *Server) createMember(w http.ResponseWriter, r *http.Request) (err error) {
@@ -54,7 +55,12 @@ func (s *Server) createMember(w http.ResponseWriter, r *http.Request) (err error
 	if cmr.Name == "" {
 		return server.APIError{
 			Code:    server.ErrBadRequest,
-			Details: "name may not be empty",
+			Details: "Name may not be empty",
+		}
+	} else if len(cmr.Name) > 100 {
+		return server.APIError{
+			Code:    server.ErrBadRequest,
+			Details: "Name may not be longer than 100 characters",
 		}
 	}
 
@@ -76,25 +82,29 @@ func (s *Server) createMember(w http.ResponseWriter, r *http.Request) (err error
 	}
 	defer tx.Rollback(ctx)
 
-	m, err := s.DB.CreateMember(ctx, tx, claims.UserID, cmr.Name, cmr.Bio, cmr.Links)
+	m, err := s.DB.CreateMember(ctx, tx, claims.UserID, cmr.Name, cmr.DisplayName, cmr.Bio, cmr.Links)
 	if err != nil {
+		if errors.Cause(err) == db.ErrMemberNameInUse {
+			return server.APIError{Code: server.ErrMemberNameInUse}
+		}
+
 		return err
 	}
 
 	// set names, pronouns, fields
-	err = s.DB.SetMemberNames(ctx, tx, claims.UserID, cmr.Names)
+	err = s.DB.SetMemberNames(ctx, tx, m.ID, cmr.Names)
 	if err != nil {
-		log.Errorf("setting names for user %v: %v", claims.UserID, err)
+		log.Errorf("setting names for member %v: %v", m.ID, err)
 		return err
 	}
-	err = s.DB.SetMemberPronouns(ctx, tx, claims.UserID, cmr.Pronouns)
+	err = s.DB.SetMemberPronouns(ctx, tx, m.ID, cmr.Pronouns)
 	if err != nil {
-		log.Errorf("setting pronouns for user %v: %v", claims.UserID, err)
+		log.Errorf("setting pronouns for member %v: %v", m.ID, err)
 		return err
 	}
-	err = s.DB.SetMemberFields(ctx, tx, claims.UserID, cmr.Fields)
+	err = s.DB.SetMemberFields(ctx, tx, m.ID, cmr.Fields)
 	if err != nil {
-		log.Errorf("setting fields for user %v: %v", claims.UserID, err)
+		log.Errorf("setting fields for member %v: %v", m.ID, err)
 		return err
 	}
 
diff --git a/backend/routes/member/get_member.go b/backend/routes/member/get_member.go
index 7f3f028..7f9174c 100644
--- a/backend/routes/member/get_member.go
+++ b/backend/routes/member/get_member.go
@@ -12,11 +12,12 @@ import (
 )
 
 type GetMemberResponse struct {
-	ID         xid.ID   `json:"id"`
-	Name       string   `json:"name"`
-	Bio        *string  `json:"bio"`
-	AvatarURLs []string `json:"avatar_urls"`
-	Links      []string `json:"links"`
+	ID          xid.ID   `json:"id"`
+	Name        string   `json:"name"`
+	DisplayName *string  `json:"display_name"`
+	Bio         *string  `json:"bio"`
+	AvatarURLs  []string `json:"avatar_urls"`
+	Links       []string `json:"links"`
 
 	Names    []db.Name    `json:"names"`
 	Pronouns []db.Pronoun `json:"pronouns"`
@@ -27,11 +28,12 @@ type GetMemberResponse struct {
 
 func dbMemberToMember(u db.User, m db.Member, names []db.Name, pronouns []db.Pronoun, fields []db.Field) GetMemberResponse {
 	return GetMemberResponse{
-		ID:         m.ID,
-		Name:       m.Name,
-		Bio:        m.Bio,
-		AvatarURLs: m.AvatarURLs,
-		Links:      m.Links,
+		ID:          m.ID,
+		Name:        m.Name,
+		DisplayName: m.DisplayName,
+		Bio:         m.Bio,
+		AvatarURLs:  m.AvatarURLs,
+		Links:       m.Links,
 
 		Names:    names,
 		Pronouns: pronouns,
diff --git a/backend/routes/member/get_members.go b/backend/routes/member/get_members.go
index 46a4e79..48814a3 100644
--- a/backend/routes/member/get_members.go
+++ b/backend/routes/member/get_members.go
@@ -11,11 +11,12 @@ import (
 )
 
 type memberListResponse struct {
-	ID         xid.ID   `json:"id"`
-	Name       string   `json:"name"`
-	Bio        *string  `json:"bio"`
-	AvatarURLs []string `json:"avatar_urls"`
-	Links      []string `json:"links"`
+	ID          xid.ID   `json:"id"`
+	Name        string   `json:"name"`
+	DisplayName *string  `json:"display_name"`
+	Bio         *string  `json:"bio"`
+	AvatarURLs  []string `json:"avatar_urls"`
+	Links       []string `json:"links"`
 }
 
 func membersToMemberList(ms []db.Member) []memberListResponse {
diff --git a/backend/server/errors.go b/backend/server/errors.go
index 0f6c4c9..6162b01 100644
--- a/backend/server/errors.go
+++ b/backend/server/errors.go
@@ -90,6 +90,7 @@ const (
 	// Member-related error codes
 	ErrMemberNotFound     = 3001
 	ErrMemberLimitReached = 3002
+	ErrMemberNameInUse    = 3003
 
 	// General request error codes
 	ErrRequestTooBig = 4001
@@ -118,6 +119,7 @@ var errCodeMessages = map[int]string{
 
 	ErrMemberNotFound:     "Member not found",
 	ErrMemberLimitReached: "Member limit reached",
+	ErrMemberNameInUse:    "Member name already in use",
 
 	ErrRequestTooBig: "Request too big (max 2 MB)",
 }
@@ -145,6 +147,7 @@ var errCodeStatuses = map[int]int{
 
 	ErrMemberNotFound:     http.StatusNotFound,
 	ErrMemberLimitReached: http.StatusBadRequest,
+	ErrMemberNameInUse:    http.StatusBadRequest,
 
 	ErrRequestTooBig: http.StatusBadRequest,
 }
diff --git a/frontend/lib/types.ts b/frontend/lib/types.ts
index 26bb632..4cc8b17 100644
--- a/frontend/lib/types.ts
+++ b/frontend/lib/types.ts
@@ -19,6 +19,7 @@ export interface User {
 export interface PartialMember {
   id: string;
   name: string;
+  display_name: string | null;
   avatar_urls: string[] | null;
 }
 
diff --git a/scripts/migrate/002_add_member_display_name.sql b/scripts/migrate/002_add_member_display_name.sql
new file mode 100644
index 0000000..6bce517
--- /dev/null
+++ b/scripts/migrate/002_add_member_display_name.sql
@@ -0,0 +1,4 @@
+-- +migrate Up
+
+-- 2022-11-20: add display name to members
+alter table members add column display_name text;