| Name of Club |
| 100 Sandwiches Club |
| 1000 Paper Cranes Project |
| AAPI (Asian American Pacific Islander) SJI (Social Justice Initiative) |
| Academic Decathlon |
| Activist of the future |
| Anti-Racism @ LCHS |
| Armenian Club |
| Artificial Intelligence Club |
| Arts for Hearts |
| Ascencia For A Better Future |
| Asian Affinity Group |
| Avatar the Last Airbender Club |
| Best Buddies |
| Beyond Your Bubble |
| Books for Burma |
| Botany Club |
| Business Professionals of America |
| CATCH - LCHS |
| CDC Club |
| Challenge Success |
| Chess Club |
| Chinese Culture Club |
| Cinematic Psychology Club |
| Club Gratitude |
| Comedy Sportz |
| Craftastic Club |
| Crafts Club |
| Creative Writing Club |
| Crochet Critters |
| Current Events Club (called Modern History Club in 2019-2020) |
| CyberPatriot Club |
| Da Dance Club |
| Data Science Club |
| Days for Girls |
| DECA |
| DEI Book Club |
| Deutsch Klub |
| Diamond Fund Investment Club |
| Dreamers Outreach |
| Dress for Success Club |
| Earth Community Creativity |
| Education Equality Club |
| Endangered Animals Club |
| Ethics Bowl |
| |
| Feminism for the Future |
| Fishing Club |
| French Club |
| Garden Club |
| Girls Who Code INFO |
| Global Computer Literacy |
| Global Health Club |
| Global Youth Mission |
| GO Club |
| Green Club |
| GSA (Genders and Sexualities Alliance) |
| Guitar Club |
| Hack Club |
| Happiness Club |
| Harmonies for Hope |
| Hearing Heros |
| Hope in a Suitcase |
| Insulin Club |
| iTeam |
| Jerryism |
| Jewelry for Jewels |
| Junior State of America (JSA) |
| Juniors for Seniors |
| KAYA |
| Key Club |
| Korean Culture Club |
| La Canada Design Club |
| La Canada Engineering Club |
| La Canada Teen Court |
| LC Amnesty International |
| LC Girl Up |
| LCHS Business Magazine |
| LCHS Equestrian Team Club |
| League Analytics |
| Liberty in North Korea |
| Literary Magazine Club (The Ink and the Iris) |
| Little Hands Make a Big Difference |
| Make A Wish Club |
| Marine Biology Club Info |
| Math Club |
| Math Valkyries |
| MDJunior |
| Medical Newspaper Club(MNC) |
| Melodies for Hope International |
| Mental Health Awareness Club |
| Mind Over Matter |
| Mini Mission |
| Mission for Mobility |
| Mock Trial |
| Model United Nations |
| Modern Technology Club |
| Mountain Bike Club |
| Multilingualism |
| MusicTogether |
| National English Honors Society |
| Negotiation Club |
| Nerd Club |
| Ocean Buddies |
| Operation Smile Club |
| Origami Club |
| Parent Teacher Student Association |
| Pasadena Humane Society Club |
| Peer Tutoring Club |
| Photography Club |
| Red Cross Club |
| Science National Honors Society |
| Science Olympiad |
| Smiles 4 Seniors |
| Spanish Club |
| Spartan Inc |
| Spartan Investing Club |
| Spartan Kindness |
| Spartan Vanguard |
| Special Olympics Club |
| Speech and Debate |
| Spike Ball Club |
| Sports Debate and Analytics Club |
| Style & Service |
| Table Top Games Club |
| Teen Friends |
| The Body Positivity Club |
| The Future of AI Club |
| The Jewelry club |
| Toy Story |
| Ultimate Frisbee |
| UNICEF Info |
| Unrecognized Asian History |
| Vision Club |
| VoiceUth |
| Winter Sports Club |
| Women in STEM |
| Young Pediatricians Club (Hope for Children) |