| Office of a Muslim leader | 25 |
| Office of matins division | 25 |
| Office of the Papal curia | 25 |
| Office of the U.S. president | 28 |
| Office overhead, often | 22 |
| Office park address abbr. | 25 |
| Office party photocopy | 22 |
| Office PC linkup letters | 24 |
| Office phone button, maybe | 26 |
| Office plant, at times? | 23 |
| Office printer's feature | 28 |
| Office rental, for example | 26 |
| Office seeker for short | 24 |
| Office seeker, briefly | 22 |
| Office seeker, for short | 24 |
| Office seeker, informally | 25 |
| Office seeker, slangily | 23 |
| Office seekers, for short | 25 |
| Office situation, of a sort | 27 |
| Office staple, ironically | 25 |
| Office staples, for short | 25 |
| Office suite component | 22 |
| Office suite door abbr. | 23 |
| Office supplies on rolls | 24 |
| Office supply store purchase | 28 |
| Office switchboard nos. | 23 |
| Office telephone button | 23 |
| Office transcriptionists | 24 |
| Office trash basket, slangily | 29 |
| Office user's deal | 22 |
| Office V.I.P., for short | 24 |
| Office wagering scheme | 22 |
| Office worker's calendar | 28 |
| Office worker's fastener | 28 |
| Office worker's necessity | 29 |
| Office worker, for short | 24 |
| Office workers' letters | 27 |
| Office workers, collectively | 28 |
| Office workers, for short | 25 |
| Office workstations, maybe | 26 |
| Office __: Staples rival | 24 |
| Office ___ (candidate) | 22 |
| Office's letter center | 26 |
| Office-cooler specialty | 23 |
| Office-furniture pieces | 23 |
| Officeholder for short | 23 |
| Officeholder's bane | 23 |
| Officeholder's office | 25 |
| Officeholder's promise | 26 |
| Officeholder, for short | 23 |
| Officeholders, for short | 24 |
| Officejet Pro printers | 22 |
| Officer Candidate Sch. | 22 |
| Officer Dibble's nemesis | 28 |
| Officer Friday's TV show | 28 |
| Officer Gannon's friend | 27 |
| Officer of the Ottoman Empire | 29 |
| Officer on a merchant vessel | 28 |
| Officer on a PT boat: Abbr. | 27 |
| Officer on the highway | 22 |
| Officer played by Takei | 23 |
| Officer Poncherello portrayer | 29 |
| Officer under a praetor | 23 |
| Officer under Capt. Kirk | 24 |
| Officer under Cornwallis | 24 |
| Officer's assistant | 23 |
| Officer's dining hall | 25 |
| Officer's embellishment | 27 |
| Officer's honorific | 23 |
| Officer's identification | 28 |
| Officer's ornament | 22 |
| Officer's regular route | 27 |
| Officers over N.C.O.'s | 26 |
| Officers training sch. | 22 |
| Officers under an adm. | 22 |
| Officers' addresses | 23 |
| Officers' club meals | 24 |
| Offices may require them | 24 |
| Official at a ball game | 23 |
| Official behind a catcher | 25 |
| Official bird of Hawaii | 23 |
| Official blooms of Tennessee | 28 |
| Official decision maker | 23 |
| Official emergency level | 24 |
| Official emergency status | 25 |
| Official flower of Phoenix? | 27 |
| Official fruit of Chicago? | 26 |
| Official fuel of NASCAR | 23 |
| Official gemstone of Alaska | 27 |
| Official in a monastery | 23 |
| Official in a striped shirt | 27 |
| Official in charge of sorts? | 28 |
| Official in lawn tennis | 23 |
| Official investigation | 22 |
| Official joke dish of Akron? | 28 |
| Official journal of the US | 26 |
| Official lang. of Barbados | 26 |
| Official lang. of Fiji | 22 |
| Official lang. of Guyana | 24 |
| Official lang. of Jamaica | 25 |