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Mary Ann Aiello

Practice areas:

Matrimorial, Child Custody

About Me

Mary Ann Aiello, Esq., the principal of the firm, relies on almost 30
years of experience zealously advocating for her clients’ rights. After
gaining several years of experience working for other firms, Ms. Aiello
ventured out to blaze her own path in 1987. Since then she has become a
prominent figure in the Long Island matrimonial and family law
community and is a member and leader of various bar associations and
other professional organizations. Additionally, she has relied on her
vast experience to teach numerous courses for Continuing Legal Education
credits as well as at local universities and law schools.


Practice Areas

Licensed since 1981

  1. Child Custody: 50%
  2. Matrimorial: 50%



Hourly ($300-425/hour)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

1 total 

  • Matthew Scott Seidner

    Working with Ms. Aiello has been a pleasure. Her advocacy for her client has never caused her to be anything other than a pure professional and I hope that I have the chance to work with her again.


    Matthew Seidner Divorce & Separation Attorney
    Relationship: Opposing Counsel on matter

Contact Info


Garden City, NY, 11530-2014



NYCurrently registered 198103/13/2015

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.

Avvo Contributions

Legal Answers


Award NameGrantorDate Granted
NY Metro Area Super Lawer (Family Law)Thomson Reuters2011
Rona Seider, Esq. AwardNassau County Women's Bar Association2006


Association NamePosition NameDuration
Family Law American Inn of CourtTreasurer and Secretary2011 - Present
Family Law American Inn of CourtMaster2009 - Present
Women's Bar Association of the State of New York; Matrimonial CommitteeCo-chair2008 - 2009
Women's Bar Association of the State of New York; Children's RightsCommitteeChair2005 - 2006
Nassau County Women's Bar AssociationPresident2001 - 2002
Nassau County Women's Bar AssociationVice President1998 - 2001
Family Law American Inn of CourtMember1997 - Present
Nassau County Women's Bar AssociationTreasurer1997 - 1998
Women's Bar Association of the State of New York; Matrimonial CommitteeDelegate1996 - 2003
Nassau County Women's Bar AssociationCorresponding Secretary1996 - 1997
Nassau County Women's Bar AssociationRecording Secretary1995 - 1996
Nassau County Bar AssociationMemberN/A
Nassau County Bar Association, Grievance CommitteeMemberN/A
Nassau County Bar Association, Advisory Committee to Nassau Academy of LawMemberN/A
Nassau County Bar Association, Matrimonial Law CommitteeMemberN/A
New York State Bar AssociationMemberN/A

Legal Cases

Case NameOutcome
Moreira v. Moreira, 84 A.D.3d 899Modified and Affirmed
Trinagel v. Boyar, 70 A.D.3d 816Court affirmed custody award in favor of Mother
Kash v KashN/A

See all Legal Cases 


Publication NameTitleDate
Nassau LawyerPractitioners Beware: DOMA's Effect on Same-Sex Marriage2011


School NameMajorDegreeGraduated
St John's University School of LawLawJD - Juris Doctor1980
Fordham UniversityPsychologyBA - Bachelor of Arts1976

Speaking Engagements

Conference NameTitleDate
Til Death or Divorce Do Us PartyDivorce and Estate Planning2011
Marriage, Divorce, Estate Planning & Employment Issues for Same-Sex CouplesSocial Security, ERISA and Pension Benefits2011
Basic Matrimonial PracticeDiscovery2011