April Monthly Events
Unless otherwise stated, these are generally observed in the US only.

Occasion  

Sponsor
Cancer Control Month    American Cancer Society
Alcohol Awareness Month (click here for more info)
Autism Awareness Month (click here for more info)
Counseling Awareness Month (click here for more info)
Child Abuse Prevention Month  National Committee to Prevent Child Abuse
International Guitar Month  Guitar & Accessories Marketing Assoc
Keep America Beautiful Month Keep America Beautiful Inc
Listening Awareness Month Effective Listeners Month
Mathematics Education Month    National Council of Teachers of Mathematics
Mathforum
Multicultural Communication Month    International Center of Multicultural Communication
National Anxiety Month National Anxiety Center
National Garden Month Garden Council
National Occupational Therapy Month American Occupational Therapy Assoc. Inc.
National Poetry Month (click here for more info) 
National Welding Month  American Welding Society
Prevention of Cruelty to Animals Month   ASPCA
Sports Eye Safety Month  Prevent Blindness America
Stress Awareness Month  Health Resource Network
STD Awareness Month (click here for more info)
Women's Eye Health and Safety Month  

(click here for more info)
Youth Sports Safety Month  (click here for more info)