You can rename indexes and other objects:

use pubs

if object_ID('test_rename_HIS') is not null drop table test_rename_HIS

if object_ID('test_rename_ARC') is not null drop table test_rename_ARC

create table test_rename_HIS

  (ID int Not Null constraint PK_HIS Primary Key,

   Name varchar(255))

go

create index I_HIS on test_rename_HIS (Name)

go

exec sp_rename

 @objname =  'test_rename_HIS' ,

    @newname =  'test_rename_ARC'  ,

    @objtype =  'Object'

go

exec sp_rename

 @objname =  'PK_HIS' ,

    @newname =  'PK_ARC'  ,

    @objtype =  'Object'

go

exec sp_rename

 @objname =  'test_rename_ARC.I_HIS' ,

    @newname =  'I_ARC'  ,

    @objtype =  'Index'

go

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