Collective nouns of people

A faculty of academics
A troupe of acrobats
A cast/company of actors/players
A bench of aldermen
A conflagration of arsonists
A troupe of artistes
A team of athletes

B
A tabernacle of bakers
A babble of barbers
A promise of barmen
A thought of barons
A squad of beaters
A bevy/galaxy of beauties
A bench/psalter of bishops
A blush of boys
A troop of boy scouts
A feast of brewers
A pack of brownies
A shuffle of bureaucrats
A goring of butchers
A sneer of butlers

C
A slate of candidates
A chapter/dignity of canons
A company/syndicate of capitalists
A congregation of churchgoers
A school of clerks
A cutting/drunkship of cobblers
A hastiness of cooks
A shrivel of critics
A cowardice of curs

D
A troupe of dancers
A decanter/decorum of deans
A board of directors
An obstruction of dons

E
A staff of employees
A panel of experts

F
A stalk of foresters

G
A talent of gamblers
A company of girl guides
A galaxy of governesses
A conjunction of grammarians

H
A herd of harlots
A melody of harpists
An observance of hermits
A gang of hoodlums
A cavalcade of horsemen
A blast of hunters

J
A bench/sentence of judges

K
A banner/rout of knights

L
A bevy of ladies
An eloquence of lawyers
A colony of lepers
An audience of listeners

M
An illusion of magicians
A bench of magistrates
A riches of matrons
A morbidity of majors
A band of men
A faith of merchants
A diligence of messengers
A troupe of minstrels
A cortege of mourners
An orchestra of musicians

N
A tribe of natives
A superfluity of nuns

O
A crowd of onlookers

P
A curse/illusion/misbelieving of painters
A malapertness of pedlars/peddler
A crowd/audience/congregation/mob of people
A troupe/troup of performers
A skirl of pipers
A posse of police
A converting of preachers
A pity/gang of prisoners

R
A band of robbers

S
A crew of sailors
A scolding of seamstresses
A house of senators
A subtlety of sergeants-at-law
An obeisance of servants
A posse of sheriffs
A blackening of shoemakers
A choir of singers
An army/brigade/company/division/muster/
platoon/troop of soldiers
A class of students
A simplicity of subalterns

T
A disguising of tailors
A glozing of taverners
A den/gang of thieves
A board of trustees
A flock of tourists

U
An unction of undertakers

V
A prudence of vicars

W
An ambush of widows
A coven of witches
A gaggle of women
A gang of workmen
A congregation of worshippers
A worship of writers

Y
A fellowship of yeomen

Also see: Collective names of animals